Stachel, H. (2024). A canal surface containing four straight lines. Journal of Industrial Design and Engineering Graphics, 19(1), 39–44. ( reposiTUm)

Stachel, H. (2022). Plücker’s Conoid Revisited. G. Slovenský Časopis Pre Geometriu a Grafiku, 19(38), 21–34. ( reposiTUm)

Stachel, H. (2022). On the motion of billiards in ellipses. European Journal of Applied Mathematics, 8(4), 1602–1622. https://doi.org/10.1007/s40879-021-00524-2 ( reposiTUm)

Stachel, H. (2022). A Triple of Projective Billiards. KoG : Scientific-Professional Journal of Croatian Society for Geometry and Graphics, 26, 44–51. https://doi.org/10.31896/k.26.4 ( reposiTUm)

Stachel, H. (2021). Isometric Billiards in Ellipses and Focal Billiards in Ellipsoids. Journal for Geometry and Graphics, 25(1), 97–118. http://hdl.handle.net/20.500.12708/138252 ( reposiTUm)

Stachel, H. (2021). The Geometry of Billiards in Ellipses and their Poncelet Grids. Journal for Geometry and Graphics, 112, Article 40. https://doi.org/10.1007/s00022-021-00606-2 ( reposiTUm)

Reznik, D., Garcia, R., & Stachel, H. (2021). Area-Invariant Pedal-Like Curves Derived from the Ellipse. Beitraege Zur Algebra Und Geometrie, 63(2), 359–377. https://doi.org/10.1007/s13366-021-00588-x ( reposiTUm)

Stachel, H. (2020). Moving ellipses on quadrics. Slovenský Časopis Pre Geometriu a Grafiku = Slovak Journal for Geometry and Graphics / Slovenská Spoločnostʹ Pre Geometriu a Grafiku, 17(33), 29–42. http://hdl.handle.net/20.500.12708/141419 ( reposiTUm)

Garcia, R., Reznik, D., Stachel, H., & Helman, M. (2020). Steiner’s Hat: a Constant-Area Deltoid Associated with the Ellipse. JOURNAL OF THE JAPANESE SOCIETY FOR FOOD SCIENCE AND TECHNOLOGY-NIPPON SHOKUHIN KAGAKU KOGAKU KAISHI, 24(24), 12–28. https://doi.org/10.31896/k.24.2 ( reposiTUm)

Stachel, H. (2020). Recalling Thread Constructions of Quadrics. Journal for Geometry and Graphics, 24, 143–157. http://hdl.handle.net/20.500.12708/141879 ( reposiTUm)

Cvetkovic, I. D., Stojicevic, M. D., Milicevic, R. G., Popkonstantinovic, B. D., & Stachel, H. (2019). The Man who invented Descriptive Geometry. FME Transactions, 47(2), 331–336. http://hdl.handle.net/20.500.12708/142365 ( reposiTUm)

Glaeser, G., Odehnal, B., & Stachel, H. (2019). A Spatial Version of the Theorem of the Angle of Circumference. Journal for Geometry and Graphics, 23(2), 147–156. http://hdl.handle.net/20.500.12708/144222 ( reposiTUm)

Figliolini, G., Angeles, J., & Stachel, H. (2019). The Logarithmic Spiral and its Spherical Counterpart. Journal of Industrial Design and Engineering Graphics, 14/1, 91–98. http://hdl.handle.net/20.500.12708/143912 ( reposiTUm)

Stachel, H. (2019). Recalling Ivory’s Theorem. FME Transactions, 47(2), 355–359. https://doi.org/10.5937/fmet1902355s ( reposiTUm)

Stachel, H. (2019). Zur Bewegung von Ellipsen auf Ellipsoiden. IBDG Informationsblaetter der Geometrie, 38(1), 16–21. http://hdl.handle.net/20.500.12708/143913 ( reposiTUm)

Stachel, H. (2018). Reflection in quadratic surfaces. Annales Mathematicae et Informaticae, 48, 51–64. http://hdl.handle.net/20.500.12708/144607 ( reposiTUm)

Stachel, H. (2017). On the Computation of Foldings. FME Transactions, 45(2), 268–275. https://doi.org/10.5937/fmet1702268s ( reposiTUm)

Inalcik, A., Ersoy, S., & Stachel, H. (2017). On Instantaneous Invariants of Hyperbolic Planes. Mathematics and Mechanics of Solids, 22(5), 1047–1057. https://doi.org/10.1177/1081286515616283 ( reposiTUm)

Sarioglugil, A., Stachel, H., & Tutar, A. (2017). On Relaxed Elastic Lines of the Second Type on an Oriented Surface in the Galilean Space G3. Results in Mathematics, 71(3–4), 955–982. https://doi.org/10.1007/s00025-017-0663-y ( reposiTUm)

Abu-Saymeh, S., Hajja, M., & Stachel, H. (2015). Equicevian Points of a Triangle. American Mathematical Monthly, 122/10, 995–1000. http://hdl.handle.net/20.500.12708/152140 ( reposiTUm)

Stachel, H. (2015). Stropoids are auto-isogonal cubics. Slovak Journal for Geometry and Graphics, 12(24), 45–59. http://hdl.handle.net/20.500.12708/152141 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2015). A Spatial version of Octoidal Gears via the generalized Camus Theorem. JOURNAL OF MECHANISMS AND ROBOTICS-TRANSACTIONS OF THE ASME, 8/2, 1–13. https://doi.org/10.1115/1.4031679 ( reposiTUm)

Stachel, H. (2015). Strophoids, a Family of Cubic Curves with Remarkable Properties. Journal of Industrial Design and Engineering Graphics, 10/1, 65–72. http://hdl.handle.net/20.500.12708/151841 ( reposiTUm)

Stachel, H. (2015). Flexible Polyhedral Surfaces with Two Flat Poses. SYMMETRY-BASEL, 2, 774–787. http://hdl.handle.net/20.500.12708/151842 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2015). The Role of the Orthogonal Helicoid in the Generation of the Tooth Flanks of Involute-Gear Pairs with Skew Axes. JOURNAL OF MECHANISMS AND ROBOTICS-TRANSACTIONS OF THE ASME, 7(1). http://hdl.handle.net/20.500.12708/151828 ( reposiTUm)

Stachel, H. (2014). Kegelschnitte -- eine (fast) unendliche Geschichte. Didaktikhefte Der ÖMG, 47, 81–90. http://hdl.handle.net/20.500.12708/158022 ( reposiTUm)

Abu-Saymeh, S., Hajja, M., & Stachel, H. (2014). Equicevian Points and Cubics of a Triangle. Journal for Geometry and  Graphics, 18(2), 133–157. http://hdl.handle.net/20.500.12708/158023 ( reposiTUm)

Sarioglugil, A., Tutar, A., & Stachel, H. (2014). On Relaxed Elastic Lines of Second Kind on a Curved Hypersurface in the n-Dimensional euclidean Space. Journal of Geometry and Graphics, 18(1), 81–95. http://hdl.handle.net/20.500.12708/157748 ( reposiTUm)

Gutruf, G., & Stachel, H. (2014). The Hidden Geometry in Vermeer’s ’ The Art of Painting’. ICCM Notices (Notices of the International Congress of the Chinese Mathematicians), 2/1, 27–36. http://hdl.handle.net/20.500.12708/157768 ( reposiTUm)

Can, E., & Stachel, H. (2014). A planar parallel 3-RRR robot with synchronously driven cranks. Mechanism and Machine Theory, 79, 29–45. http://hdl.handle.net/20.500.12708/157741 ( reposiTUm)

Stachel, H. (2014). On the flexibility and symmetry of overconstrained mechanisms. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 372(2008), 20120040. https://doi.org/10.1098/rsta.2012.0040 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2013). On the Synthesis of Spatial Cycloidal Gears. Meccanica, 48(5), 1239–1249. http://hdl.handle.net/20.500.12708/156112 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2013). On Martin Disteli’s Spatial Cycloidal Gearing. Mechanism and Machine Theory, 60, 73–89. https://doi.org/10.1016/j.mechmachtheory.2012.09.005 ( reposiTUm)

Stachel, H. (2012). A Flexible Planar Tessellation with a Flexion Tiling a Cylinder of Revolution. Journal for Geometry and  Graphics, 16(2), 153–170. http://hdl.handle.net/20.500.12708/164659 ( reposiTUm)

Stachel, H. (2011). What lies between the flexibility and rigidity of structures. Serbian Architectural Journal, 3(2), 102–115. http://hdl.handle.net/20.500.12708/162694 ( reposiTUm)

Gutruf, G., & Stachel, H. (2010). The Hidden Geometry in Vermeers’s “The Art of Painting.” Journal of Geometry and Graphics, 14/2, 187–201. http://hdl.handle.net/20.500.12708/167885 ( reposiTUm)

Alexandrov, V., Sabitov, I. Kh., & Stachel, H. (2010). Rigidity and Related Topics in Geometry. European Journal of Combinatorics, 31(4), 1035. http://hdl.handle.net/20.500.12708/167886 ( reposiTUm)

Alexandrov, V., Sabitov, I. Kh., & Stachel, H. (2010). Preface to “Rigidity and Related Topics in Geometry.” European Journal of Combinatorics, 31/4, 1035–1036. http://hdl.handle.net/20.500.12708/167881 ( reposiTUm)

Stachel, H. (2010). A kinematic approach to Koktsakis meshes. Computer Aided Geometric Design, 27, 428–437. http://hdl.handle.net/20.500.12708/167882 ( reposiTUm)

Stachel, H. (2009). Vom Falten und Verebnen polyedrischer Figuren. IBDG, 28(2), 17–21. http://hdl.handle.net/20.500.12708/167877 ( reposiTUm)

Stachel, H. (2009). 30 Jahre Strobl. IBDG, 28(2), 4–5. http://hdl.handle.net/20.500.12708/167878 ( reposiTUm)

Stachel, H. (2009). Remarks on Miura-ori, a Japanese Folding Method. Acta Technica Napocensis, Ser. Applied Mathematics and Mechanics, 52(Ia), 245–248. http://hdl.handle.net/20.500.12708/165373 ( reposiTUm)

Windisch, G., Odehnal, B., Reimann, R., Anderhuber, F., & Stachel, H. (2007). Contact areas of the tibiotalar joint. Journal of Orthopaedic Research, 24, 1481–1487. http://hdl.handle.net/20.500.12708/168752 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2007). A new look at the Ball-Disteli diagram and its relevance to spatial gearing. Mechanism and Machine Theory, 42(10), 1362–1375. http://hdl.handle.net/20.500.12708/168789 ( reposiTUm)

Saymeh, S. A., Hajja, M., & Stachel, H. (2007). Another cubic associated with the triangle. Journal for Geometry and  Graphics, 11, 15–26. http://hdl.handle.net/20.500.12708/168790 ( reposiTUm)

Windisch, G., Odehnal, B., Reimann, R., & Stachel, H. (2006). Fünf Freiheitsgrade? Inwiefern das obere Sprunggelenk vom idealen Scharnier abweicht. Anuals of Anatomy Supplement, 187, 305. http://hdl.handle.net/20.500.12708/172077 ( reposiTUm)

Stachel, H. (2006). Descriptive Geometry Meets Computer Vision - The Geometry of Two Images. Journal for Geometry and  Graphics, 10(2), 137–153. http://hdl.handle.net/20.500.12708/172144 ( reposiTUm)

Tsutsumi, E., Schröcker, H.-P., Stachel, H., & Weiss, G. (2005). Evaluation of Students’ Spatial Abilities in Austria and Germany. Journal for Geometry and  Graphics, 9(1), 107–117. http://hdl.handle.net/20.500.12708/171887 ( reposiTUm)

Stachel, H. (2005). Descriptive Geometry in Today’s Engineering Curriculum. TRANSACTIONS OF FAMENA, XXIX–2, 35–45. http://hdl.handle.net/20.500.12708/172024 ( reposiTUm)

Stachel, H. (2004). Cemu sluzi nacrtna geometrija? KoG, 8, 37–42. http://hdl.handle.net/20.500.12708/174547 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2024). Kinematic Analysis of Higher-Pair Mechanism for the Generation of Involute Tooth Profiles. In MMT Symposium: Book of Abstracts (pp. 343–344). ( reposiTUm)

Stachel, H. (2024). Henrici’s flexible hyperboloid and snapping spatial four-bars. In Proceedings of the 10th Czech-Slovak Conference on Geometry and Graphics 2024 (pp. 99–104). ( reposiTUm)

Stachel, H. (2023). The design of skew gears from the geometric point of view. In I. Bajšanski & M. Jovanović (Eds.), Geometry, Graphics and Design in the Digital Age (pp. 217–228). Faculty of Technical Sciences, University of Novi Sad. ( reposiTUm)

Stachel, H. (2022). On the Diagonals of Billiards. In ICGG 2022 - Proceedings of the 20th International Conference on Geometry and Graphics (pp. 19–33). https://doi.org/10.1007/978-3-031-13588-0_2 ( reposiTUm)

Stachel, H. (2021). Billiard Motions in Ellipses - Invariants of Projective Nature. In Proceedings of the Slovak-Czech Conference on Geometry and Graphics 2021, (pp. 143–148). Kocovce/Slovakia, Vydavatelský servis, Plzen. http://hdl.handle.net/20.500.12708/41794 ( reposiTUm)

Stachel, H. (2020). Plückers conoid, hyperboloids of revolution and orthogonal hyperbolic paraboloids. In Proceedings moNGeometrija 2020 (pp. 51–62). Serbian Society for Geometry and Graphics - University of Belgrade - Akademska misao Belgrade. http://hdl.handle.net/20.500.12708/41770 ( reposiTUm)

Stachel, H. (2020). String constructions of quadrics Revisited. In L.-Y. Cheng (Ed.), ICGG 2020 - Proceedings of the 19th International Conference on Geometry and Graphics (pp. 3–14). Springer, Cham. https://doi.org/10.1007/978-3-030-63403-2_1 ( reposiTUm)

Stachel, H. (2019). Giving Birth to the International Society for Geometry and Graphics - Documentation of the Years 1988-1994. In ICGG 2018 (pp. 3–6). Springer International Publishing. http://hdl.handle.net/20.500.12708/41664 ( reposiTUm)

Stachel, H. (2019). The Evolution of Descriptive Geometry. In Descriptive Geometry, The Spread of a Polytechnic Art, International Studies in the History of Mathematics and its Teaching (pp. 181–195). Springer. http://hdl.handle.net/20.500.12708/41716 ( reposiTUm)

Stachel, H. (2019). Movement of conics on quadrics. In D. Velichová, M. Lavicka, & D. Szarková (Eds.), Proceedings of the Slovak-Czech Conference on Geometry and Graphics 2019 (pp. 157–164). Trencianske Teplice/Slovakia. http://hdl.handle.net/20.500.12708/41717 ( reposiTUm)

Stachel, H. (2018). Two Remarkable Spherical Arrangements of Circles. In ICGG 2018 (pp. 401–409). http://hdl.handle.net/20.500.12708/41670 ( reposiTUm)

Glaeser, G., Odehnal, B., & Stachel, H. (2018). A Spatial Version of the Theorem of the Angle of Circumference. In ICGG 2018 (pp. 265–276). Springer International Publishing. http://hdl.handle.net/20.500.12708/41663 ( reposiTUm)

Stachel, H. (2018). Recalling Ivory’s Theorem. In Conference Proceedings Mongeometrija 2018 (pp. 457–464). Faculty of Technical Sciences, University of Novi Sad. http://hdl.handle.net/20.500.12708/41662 ( reposiTUm)

Stachel, H. (2018). Spiral polyhedra in sphere and cylinder. In Digital design exhibition “Designing Complexity 2018.” Faculty of Sciences. http://hdl.handle.net/20.500.12708/41661 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2017). Synthesis of the Involute Tooth Profiles of Gears and their Rack. In Gechi Edizioni 2017 (pp. 625–632). Italian Association of Theoretical and Appllied Mechanics. http://hdl.handle.net/20.500.12708/41539 ( reposiTUm)

Stachel, H. (2017). Two particular quadratic cones. In Proceeding of Slovak-Czech Conference on Geometry and Graphics (pp. 147–152). Vydavatelsy servis, Plzen. http://hdl.handle.net/20.500.12708/41666 ( reposiTUm)

Panchuk, K., Kaygorodtseva, N., & Stachel, H. (2017). Cyclographic Descriptive Geometry (in Russian). In Cyclographic Descriptive Geometry (p. 6). “Izdatel 'stvo OmGTU”, Omsk. http://hdl.handle.net/20.500.12708/41724 ( reposiTUm)

Stachel, H. (2016). Two examples of curved foldings. In Pproceedings of the 17th Inernational Conference on Geometry and Graphics (pp. 1–11). Beijing Institute of Technology Press. http://hdl.handle.net/20.500.12708/41507 ( reposiTUm)

Stachel, H. (2016). On the Computation of Foldings. In Proceedings of moNGeometrija 2016 (pp. 287–288). Serbian Society for Geometry and Graphics - University of Belgrade - Akademska misao Belgrade. http://hdl.handle.net/20.500.12708/41506 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2016). Base Curves of Involute Cylindrical Gears via Aronholds’s First Theorem. In Power transmission with gears (pp. 1233–1242). Institution of Mechanical Engineers. http://hdl.handle.net/20.500.12708/41500 ( reposiTUm)

Stachel, H. (2016). Two Examples of Curved Foldings. In ICGG (pp. 1–11). http://hdl.handle.net/20.500.12708/41446 ( reposiTUm)

Stachel, H. (2014). The Design of the New Sun-Reflection-Dial in Heiligenkreuz/Austria. In moNGeometrija (pp. 285–296). Universität Vlasina, Serbien. http://hdl.handle.net/20.500.12708/41371 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2014). The Role of the Orthogonal Helicoid in the Generation of the Tooth Flanks of Involute-Gear Pairs with Skew Axes. In Proc. IDETC/CIE 2014. ASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. http://hdl.handle.net/20.500.12708/41374 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2014). Synthesis of the base curves of non-circular gears via the return circle. In Proc. International Gear Conference (pp. 540–550). Elsevier. http://hdl.handle.net/20.500.12708/41375 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2014). A Study on Spatial Cycloid Gearing. In Proceedings of the 16th International Conference on Geometrie and Graphics (pp. 1192–1205). Technische Universität Innsbruck. http://hdl.handle.net/20.500.12708/41373 ( reposiTUm)

Stachel, H. (2012). A flexible quadrangular mesh tiling a cylinder of revolution. In Proc.15th Internat. Conf. on Geometry and Graphics (pp. 711–719). Mc Gill University, Montreal, Kanada. http://hdl.handle.net/20.500.12708/41182 ( reposiTUm)

Stachel, H. (2011). Dual continuation of cycloidal bevel gears - skew gears with ruled surfaces as tooth flanks. In Proceedings IW-LGK-11 (pp. 125–126). Technische Universität Dresden. http://hdl.handle.net/20.500.12708/41099 ( reposiTUm)

Stachel, H. (2011). Dual contnuation of cycloidal bevel geatrs - skew gears with ruled surfaces as tooth flanks. In IW-LGK-11 (pp. 125–126). http://hdl.handle.net/20.500.12708/41116 ( reposiTUm)

Stachel, H. (2011). Remarks on flexible quad meshes. In Proceedings 11th Internat. conference on Engneering Graphics-BALTGRAF’11 (pp. 84–92). http://hdl.handle.net/20.500.12708/41117 ( reposiTUm)

Stachel, H. (2011). Remarks on flexible quad meshes. In Proceedings 11th Internat. conference on Engneering Graphics-BALTGRAF’11 (pp. 84–92). Universität Tallinn/Estonia. http://hdl.handle.net/20.500.12708/41096 ( reposiTUm)

Stachel, H. (2010). The Influence of Geometry on the Rigidity or Flexibility of Structures. In Proceedings IWSSIP 2010 (pp. 24–29). EdUFF. http://hdl.handle.net/20.500.12708/40990 ( reposiTUm)

Stachel, H. (2010). Comments on flexible Kokotsakis meshes. In Collection of abstracts, Internat. Conf. “Metric Geometry of Surfaces and Polyhedra” dedicated to the Centennial Anniversary of Nikolai Vladimirovich Efimov (pp. 82–83). Maks Press. http://hdl.handle.net/20.500.12708/41047 ( reposiTUm)

Gutruf, G., & Stachel, H. (2010). Reconstructing Vermeers’s Perspective in “The Art of Painting.” In 14th ICGG (pp. 1–10). ICGG. http://hdl.handle.net/20.500.12708/40993 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2009). The Computational Fundamentals of Spatial Cycloidal Gearing. In Computational Kinematics, Proceedings of the 5th Inernat. Workshop on Computational Kinematics (pp. 375–384). Springer Verlag. http://hdl.handle.net/20.500.12708/40882 ( reposiTUm)

Stachel, H. (2008). Gears and Belt Drives for Nonuniform Transmission. In Proceedings of EUCOMES 08 (pp. 423–430). M. Ceccarelli. http://hdl.handle.net/20.500.12708/40795 ( reposiTUm)

Stachel, H. (2008). Comments on Helical Developables. In 13th ICGG (Internat. Conf. on Geometry and Graphics). Gunter Weiss und ISGG. http://hdl.handle.net/20.500.12708/40794 ( reposiTUm)

Stachel, H. (2007). The status of todays Descriptive Geometry related education CAD/CG/DG in Europe. In Proceeding Annual Meeting of Japan Society for Graphic Science (pp. 15–20). JSGS. http://hdl.handle.net/20.500.12708/40718 ( reposiTUm)

Stachel, H. (2007). The geometry behind the numerical reconstruction of two photos. In ICEGD 2007 (pp. 193–196). Dunare de Jos University. http://hdl.handle.net/20.500.12708/40724 ( reposiTUm)

Stachel, H. (2006). Descriptive Geometry Meets Computer Vision -- The Geometry of Multiple Images. In Proceedings 12th International Conference on Geometry and Graphics. Universität Salvador/Brazil. http://hdl.handle.net/20.500.12708/40644 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2006). On Martin Disteli’s Main Achievements in Spatial Gearing: Disteli’s Diagram. In Proceedings of EuCoMeS. European Conference on Mechanism Science, Obergurgl, Austria. http://hdl.handle.net/20.500.12708/40627 ( reposiTUm)

Stachel, H. (2006). Teaching Spatial Kinematics for Mechanical Engineering Students. In 5th International Conference Aplimat (pp. 201–210). http://hdl.handle.net/20.500.12708/40629 ( reposiTUm)

Stachel, H. (2005). Spatial involute gearing - a new type of skew gears. In I. Nobuyuki, Y. Takeda, & T. Kanada (Eds.), New Progress in Design Engineering and Science, ICDES 2005 (pp. 25–30). Japan Society for Design Engineering. http://hdl.handle.net/20.500.12708/40571 ( reposiTUm)

Stachel, H. (2005). Teaching Spatial Kinematics for Engineers. In M. Maciazek & J. Moscinski (Eds.), International Conference on Engineering education “Global Education Interlink” (pp. 845–851). Silesian University of Technology. http://hdl.handle.net/20.500.12708/40570 ( reposiTUm)

Stachel, H. (2017). Nicht der Schatten, sondern das Licht zeigt die Zeit. In Die Sonnenreflexionsuhr im Stift Heiligenkreuz als Denkmal für Gewissens und Religionsfreiheit (pp. 54–60). Be&Be Verlag. http://hdl.handle.net/20.500.12708/29518 ( reposiTUm)

Stachel, H. (2017). Berechnungen zum Gnomon. In Die Sonnenreflexionsuhr im Stift Heiligenkreuz als Denkmal für Gewissens und Religionsfreiheit (pp. 48–53). Be&Be Verlag. http://hdl.handle.net/20.500.12708/29517 ( reposiTUm)

Stachel, H. (2015). Descriptive Geometry - Vision Guided Spatial Reasoning. In L. Cocchiarella (Ed.), The Visual Language of Technique (pp. 71–84). Springer International Publishing Switzerland. https://doi.org/10.1007/978-3-319-05350-9_7 ( reposiTUm)

Nawratil, G., & Stachel, H. (2010). Composition of shperical four-bar-mechanisms. In New Trends in Mechanisms Science (pp. 99–106). Springer Verlag. http://hdl.handle.net/20.500.12708/27007 ( reposiTUm)

Stachel, H. (2006). Flexible Octahedra in the Hyperbolic Space. In A. Prekopa & A. Molnar (Eds.), Non-Euclidean Geometries (pp. 209–225). Springer. http://hdl.handle.net/20.500.12708/25095 ( reposiTUm)

Glaeser, G., Stachel, H., & Odehnal, B. (2024). The Universe of Conics : From the Ancient Greeks to 21st Century Developments (2024th ed.). Springer. https://doi.org/10.1007/978-3-662-70306-9 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, C., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (2022). Arbeitsbuch Mathematik. Springer Spektrum. https://doi.org/10.1007/978-3-662-64391-4 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, C., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (2022). Mathematik. Springer Spektrum. https://doi.org/10.1007/978-3-662-64389-1 ( reposiTUm)

Arens, T., R. Busam, Hettlich, F., Karpfinger, Ch., & Stachel, H. (2021). Arbeitsbuch Grundwissen Mathematikstudium - Analysis und Lineare Algebra mit Querverbindungen - Aufgaben, Hinweise, Lösungen und Lösungswege. Springer Spektrum Berlin. https://doi.org/10.1007/978-3-662-63368-7 ( reposiTUm)

Arens, T., Busam, R., Hettlich, F., Karpfinger, C., & Stachel, H. (2021). Grundwissen Mathematikstudium. Springer Spektrum. https://doi.org/10.1007/978-3-662-63313-7 ( reposiTUm)

Karpfinger, Ch., & Stachel, H. (Eds.). (2020). Lineare Algebra. Springer Spektrum. https://doi.org/10.1007/978-3-662-61340-5 ( reposiTUm)

Karpfinger, Ch., & Stachel, H. (Eds.). (2020). Arbeitsbuch Lineare Algebra. Springer Spektrum. https://doi.org/10.1007/978-3-662-61472-3 ( reposiTUm)

Odehnal, B., Stachel, H., & Glaeser, G. (Eds.). (2020). The Universe of Quadrics. Springer Verlag Berlin-Heidelberg. http://hdl.handle.net/20.500.12708/24763 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, C., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (2018). Mathematik, 4. Auflage. Springer Spektrum. https://doi.org/10.1007/978-3-662-56741-8 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, C., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (2018). Arbeitsbuch Mathematik. Springer Spektrum. https://doi.org/10.1007/978-3-662-56750-0 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (Eds.). (2017). Ergänzungen und Vertiefungen zu Arens et al.; Mathematik. Springer Spektrum. http://hdl.handle.net/20.500.12708/24342 ( reposiTUm)

Glaeser, G., Stachel, H., & Odehnal, B. (Eds.). (2016). The Universe of Conics. Springer Spektrum. http://hdl.handle.net/20.500.12708/24262 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (Eds.). (2015). Mathematik. Spektrum Akademischer Verlag. https://doi.org/10.1007/978-3-642-44919-2 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (Eds.). (2015). Arbeitsbuch Mathematik. Spektrum Akademischer Verlag. https://doi.org/10.1007/978-3-642-54948-9 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (Eds.). (2013). Mathematik mit Arbeitsbuch. Springer. http://hdl.handle.net/20.500.12708/23772 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (2012). Arbeitsbuch Mathematik. Spektrum Akademischer Verlag. http://hdl.handle.net/20.500.12708/23607 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (2011). Mathematik. Spektrum Akademischer Verlag. http://hdl.handle.net/20.500.12708/23343 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (Eds.). (2009). Mathematik zum Mitnehmen. Spektrum Akademischer Verlag. http://hdl.handle.net/20.500.12708/23044 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (Eds.). (2009). Ergänzungen und Vertiefungen zu Mathematik. Spektrum Akademischer Verlag. http://hdl.handle.net/20.500.12708/23053 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (Eds.). (2009). Arbeitsbuch Mathematik. Spektrum Akademischer Verlag. http://hdl.handle.net/20.500.12708/23046 ( reposiTUm)

Arens, T., Hettlich, F., Karpfinger, Ch., Kockelkorn, U., Lichtenegger, K., & Stachel, H. (2008). Mathematik. Spektrum Akademischer Verlag. http://hdl.handle.net/20.500.12708/22784 ( reposiTUm)

Barr, R. E., Kato, M., & Stachel, H. (Eds.). (2007). Journal for Geometry and Graphics. Heldermann Verlag. http://hdl.handle.net/20.500.12708/22186 ( reposiTUm)

Barr, R. E., Kato, M., & Stachel, H. (Eds.). (2006). Journal for Geometry and Graphics. Heldermann Verlag. http://hdl.handle.net/20.500.12708/22167 ( reposiTUm)

Stachel, H. (2020). Plückers conoid, hyperboloids of revolution and orthogonal hyperbolic paraboloids. moNGeometrija 2020, Online due to Covid-19, Austria. http://hdl.handle.net/20.500.12708/123191 ( reposiTUm)

Stachel, H. (2020). The motion of billiards in ellipses. Differential Geometry Seminar, Cambridge, United States of America (the). http://hdl.handle.net/20.500.12708/123192 ( reposiTUm)

Stachel, H. (2019). Revisiting quadrics: String constructions and movement of conics. 21st Scientific-Professional Colloquium on Geometry and Graphics, Sisak, Croatia. http://hdl.handle.net/20.500.12708/123016 ( reposiTUm)

Stachel, H. (2019). The logarithmic spiral and its shperical counterpart. ICEGD 8th Internat Conference on Engineering Graphics and Design, Craiova, Romania. http://hdl.handle.net/20.500.12708/123014 ( reposiTUm)

Stachel, H. (2019). Moving conics on quadrics. CGTA 2019 Conference on Geometry: Theory and Applications, Innsbruck, Austria. http://hdl.handle.net/20.500.12708/123015 ( reposiTUm)

Stachel, H. (2019). The logarithmic spiral and its shperical counterpart. Departementskolloquium, Universität Freiburg, Switzerland. http://hdl.handle.net/20.500.12708/123013 ( reposiTUm)

Stachel, H. (2019). Movement of conics on quadrics. Slovak-Czech Conference on Geometry and Graphics, Trencianske Teplice, Slovakia. http://hdl.handle.net/20.500.12708/123017 ( reposiTUm)

Stachel, H. (2018). Between Rigidity and flexibility. Workshop on Rigidity and flexibility of geometric structures, Erwin Schrödinger Institut, Austria. http://hdl.handle.net/20.500.12708/122676 ( reposiTUm)

Stachel, H. (2018). The logarithmic spiral in kinematics. Croatian Conference on Geometry and Graphics, Vodnjan (Peroj), Croatia. http://hdl.handle.net/20.500.12708/122664 ( reposiTUm)

Stachel, H. (2018). AG Didaktik und Geschichte der Mathematik. Oberseminar, Wuppertal, Germany. http://hdl.handle.net/20.500.12708/122663 ( reposiTUm)

Stachel, H. (2018). On the Interdisciplinarity of Geometry. 14th Miklos Ivanyi International PhD & DLA Symposium, Pecs, Hungary. http://hdl.handle.net/20.500.12708/122662 ( reposiTUm)

Stachel, H. (2017). Mathematisches zur Sonnenreflexionsuhr. Präsentation des Buches F.Mayrhofer, G. Liechtenstein: Die Sonnenrflexionsuhr., Stift Heiligenkreuz, Austria. http://hdl.handle.net/20.500.12708/122108 ( reposiTUm)

Stachel, H. (2017). Die Rolle der Geometrie bei Navigationssystemen. Fortbildungstagung für Geometrie, Strobl am Wolfgangsee, Austria. http://hdl.handle.net/20.500.12708/122139 ( reposiTUm)

Stachel, H. (2017). Die Rolle der Geometrie bei Navigationssystemen. ÖMG Lehrertag, Universität Wien, Austria. http://hdl.handle.net/20.500.12708/122135 ( reposiTUm)

Stachel, H. (2017). Bewegliche polyedrische Strukturen. Mathematisches Kolloquium, TH Aachen, Austria. http://hdl.handle.net/20.500.12708/121948 ( reposiTUm)

Stachel, H. (2017). Reflection in Quadrics. CGTA 2017 - Conference on Geometry: Theory and Applications, PLzen, Czechia. http://hdl.handle.net/20.500.12708/121992 ( reposiTUm)

Stachel, H. (2017). Reflection in Quadrics and Ivory’s Theorem. 20th Scientific-Professional Colloquium on Geometry and Graphics, Fuzine, Croatia. http://hdl.handle.net/20.500.12708/122136 ( reposiTUm)

Stachel, H. (2017). The Journal for Geometry and Graphics. XIV Congress of the Italian Union for Drawing (UID), Naples, Italy. http://hdl.handle.net/20.500.12708/122138 ( reposiTUm)

Stachel, H. (2017). Two particular quadratic cones. Conference on Geometry and Graphics, Vlachovice, Czechia. http://hdl.handle.net/20.500.12708/122137 ( reposiTUm)

Stachel, H. (2017). Reflection in quadratic surfaces. 10th International Conference on Applied Informatics, Eger, Hungary. http://hdl.handle.net/20.500.12708/122107 ( reposiTUm)

Stachel, H. (2016). Applied Geometry: Foldings and Unfoldings. International Conference on New Horizons in Education & International Science and Technology Conference, Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/121715 ( reposiTUm)

Stachel, H. (2016). Auto-isogonal cubics. 19th Scientific-Professional Colloquium on Geomtry and Graphics, Starigrad-Paklenica, Croatia. http://hdl.handle.net/20.500.12708/121716 ( reposiTUm)

Stachel, H. (2016). On the Computation of Foldings. 5th International Conference MonGeometrija, Belgrade, Serbia. http://hdl.handle.net/20.500.12708/121714 ( reposiTUm)

Stachel, H. (2016). A strategy to train spatial ability. International Educational Technology Conference, Dubai, United Arab Emirates (the). http://hdl.handle.net/20.500.12708/121622 ( reposiTUm)

Stachel, H. (2015). Strophoids, a Family of Cubic Curves with Remarkable Properties. International Conference on Engineering Graphics and Design, Brasov, Romania. http://hdl.handle.net/20.500.12708/121385 ( reposiTUm)

Stachel, H. (2015). Strophoids - cubic curves with remarkable properties. Conference on Geometry and Graphics, Vlachovice, Czechia. http://hdl.handle.net/20.500.12708/121401 ( reposiTUm)

Stachel, H. (2015). Strophoids and the Equicevian Points of a Triangle. Scientific Professional Colloquium on Geometry and Graphics, Beli Manastir, Croatia. http://hdl.handle.net/20.500.12708/121400 ( reposiTUm)

Stachel, H. (2015). Equicevian points and Equicevian Strophoids. Panhellenic Conference on Geometry, Thessaloniki, Greece. http://hdl.handle.net/20.500.12708/121395 ( reposiTUm)

Stachel, H. (2014). The design of the new sun-reflection-dial in Heiligenkreuz/Austria. IV International Conference on Geometry and Graphics MonGeometrija, Vlasina, Serbien, EU. http://hdl.handle.net/20.500.12708/121037 ( reposiTUm)

Stachel, H. (2014). Basics of Epipolar Geometry. Seminar des Institute of Mathematics and Physics, Faculty of Mechanical Engineering, Slovak University of Technology (STU), Bratislava, EU. http://hdl.handle.net/20.500.12708/121036 ( reposiTUm)

Stachel, H. (2014). Kegelschnitte - eine (fast) unendliche Geschichte. Lehrerfortbildungstag der ÖMG, Universität Wien, Austria, Austria. http://hdl.handle.net/20.500.12708/121035 ( reposiTUm)

Stachel, H. (2014). Geheime Geometrie in Vermeers Malkunst. Ausstellung: Wunderkammer 2014, Wien, Austria. http://hdl.handle.net/20.500.12708/121034 ( reposiTUm)

Stachel, H. (2014). The design of the new sun-reflection-dial in Heiligenkreuz/Austria. Geometrija za buduce arhitekte, Gradjevinsko-arhitektonski fakultet (GAF), Nis, Serbien, Non-EU. http://hdl.handle.net/20.500.12708/121038 ( reposiTUm)

Stachel, H. (2014). Ist ein Polyeder durch sein Netz festgelegt? Geburtstagskolloquium Univ.Prof. Otto Röschel, TU Graz, Graz, Austria. http://hdl.handle.net/20.500.12708/121039 ( reposiTUm)

Stachel, H. (2014). On study’s principle of transference. 3rd International Eurasian Conference on Mathematical Sciences and Application (IECMSA), Wien, Austria. http://hdl.handle.net/20.500.12708/121053 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2014). A Study on Spatial Cycloid Gearing. 16th International Conference on Geometry and Graphics ICGG2014, Innsbruck, Österreich, Austria. http://hdl.handle.net/20.500.12708/121040 ( reposiTUm)

Stachel, H. (2014). The Design of a New Sun-Reflection-Dial in Heiligenkreuz/Austria. Conference on Geometry and Graphics, Vlachovice, Czech Republic, EU. http://hdl.handle.net/20.500.12708/121056 ( reposiTUm)

Stachel, H. (2014). On the rigidity of simplices with prescribed areas of 2-facets. Third Croatian Conference on Geometry and Graphics, Supetar, Croatia, EU. http://hdl.handle.net/20.500.12708/121054 ( reposiTUm)

Stachel, H. (2013). Conics and quadrics for ever. 17th Colloquium on Geometry and Graphics, Rastoke, Croatia, EU. http://hdl.handle.net/20.500.12708/120585 ( reposiTUm)

Stachel, H. (2013). Descriptive Geometry -- Image-Based Spatial Reasoning. Politecnico di Milano, Milan, Italy, EU. http://hdl.handle.net/20.500.12708/120600 ( reposiTUm)

Stachel, H. (2013). Spatial Versions of Cycloid and Involute Gearing. International Conference on Geometry: Theory and Applications, Ljubljana, Slowenien, EU. http://hdl.handle.net/20.500.12708/120605 ( reposiTUm)

Stachel, H. (2013). Von Robert Sauers Vierecksflächen zu beweglichen Quad Meshes. Festkolloquium 80.Geburtstag von Prof. Oswald Giering, TU München, EU. http://hdl.handle.net/20.500.12708/120604 ( reposiTUm)

Stachel, H. (2013). Kokotsakis meshes and flexible quad meshes. Joint Internat. Mathematics Meeting, Special Session: Articulated Systems: Combinatorics, Geometry and Kinematics, Alba Iulia, Rumänien, EU. http://hdl.handle.net/20.500.12708/120608 ( reposiTUm)

Stachel, H. (2013). Flexible Quad Meshes. 10th Crimean International Scientific-practical Conference SED-13, Simferopol, Crimea, Ukraine, Non-EU. http://hdl.handle.net/20.500.12708/120631 ( reposiTUm)

Stachel, H. (2012). Self-motions of the Kokotsakis tesselation. BIRS Workshop 12w5069: Rigidity Theory: Progress, Applications and Key Open Problem, Banff, Canada, Non-EU. http://hdl.handle.net/20.500.12708/120214 ( reposiTUm)

Stachel, H. (2012). On the flexibiity and symmetry of overconstrained mechanisms. Royal Society Theo Murphy International Scientific Meeting on “Rigidity of periodic and symmetric structures in nature and engineering,” Kavli Royal Society International Centre at Chicheley Hall, England, EU. http://hdl.handle.net/20.500.12708/120215 ( reposiTUm)

Stachel, H. (2012). Das Denkmal “Epiphanie” in Heiligenkreuz als Sonnenuhr. Jahrestagung der Arbeitsgruppe Sonnenuhren im Österreichischen Astronomischen Verein, Heiligenkreuz, Austria. http://hdl.handle.net/20.500.12708/120212 ( reposiTUm)

Stachel, H. (2012). A flexible quadrangular mesh tiling a cylinder of revolution. International Conference on Geometry and Graphics, Montreal, Canada, Non-EU. http://hdl.handle.net/20.500.12708/120213 ( reposiTUm)

Stachel, H. (2012). Wer die Geometrie begreift, vermag in dieser Welt alles zu verstehen. Fortbildungstagung, Strobl, Austria. http://hdl.handle.net/20.500.12708/120211 ( reposiTUm)

Stachel, H. (2012). Flexible polygonal meshes. GeoGra2012, 1st International Conference on Applied Geometry and Graphics, Ybl Miklos Faculty of Arch. and Civil Engineering, Szent Istvan University, Budapest, EU. http://hdl.handle.net/20.500.12708/120216 ( reposiTUm)

Stachel, H. (2011). On the flexibility of Kokotsakis meshes. Fields Institute, Toronto/Canada, Non-EU. http://hdl.handle.net/20.500.12708/119922 ( reposiTUm)

Stachel, H. (2011). Remarks on Kokotsakis meshes. University of South Bohemia, Ceske Budejovice, Tschechien, EU. http://hdl.handle.net/20.500.12708/119921 ( reposiTUm)

Stachel, H. (2011). Das Denkmal “Epiphanie” als Sonnenuhr. Stift Heiligenkreuz, Heiligenkreuz im Wienerwald, Austria. http://hdl.handle.net/20.500.12708/119923 ( reposiTUm)

Stachel, H. (2011). The Spatial Versions of Involute and Cycloid Gearing. 8th Crimean International Scientific-Practical Conference, Simferopol, Crimea, Ukraine, Non-EU. http://hdl.handle.net/20.500.12708/119929 ( reposiTUm)

Stachel, H. (2011). Flexible quadrilateral meshes and paper folding. 31st Conference on Geometry and Graphics, Mala Moravka, Tschechien, EU. http://hdl.handle.net/20.500.12708/119928 ( reposiTUm)

Stachel, H. (2011). Some news about flexible Kokotsakis meshes. Conference on Geometry, Vorau, Austria. http://hdl.handle.net/20.500.12708/119927 ( reposiTUm)

Stachel, H. (2009). 30 Jahre Strobl, Festrede. Fortbildungstagung des ADG in Strobl, Strobl, Austria. http://hdl.handle.net/20.500.12708/119561 ( reposiTUm)

Stachel, H. (2007). A proposal for a proper definition of higher-order rigidity. ESI - Erwin Schrödinger Institute, Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/117992 ( reposiTUm)

Stachel, H. (2007). A proposal for a proper definition of higher-order rigidity. Faculty Tensegrity Workshop, La Vacquerie, France, EU. http://hdl.handle.net/20.500.12708/118507 ( reposiTUm)

Stachel, H. (2007). A (3,8)-flexible bar-and-joint framework? AIM Workshop "Rigidity and polyhedral combinatorics, Palo Alto/CA, Non-EU. http://hdl.handle.net/20.500.12708/118508 ( reposiTUm)

Stachel, H. (2007). From Rytz to the covariance ellipsoid. Conference on Geometry, Vorau, Austria. http://hdl.handle.net/20.500.12708/118506 ( reposiTUm)

Stachel, H. (2007). The status of todays Descriptive Geometry related education CAD/CG/DG in Europe. 40th anniversary of the Japan Society for Graphics Science, Tokyo, Non-EU. http://hdl.handle.net/20.500.12708/118494 ( reposiTUm)

Stachel, H. (2007). The geometry behind the numerical reconstruction of two photos. 2nd International Conference on Engineering Graphics and Design, Galati, EU. http://hdl.handle.net/20.500.12708/118495 ( reposiTUm)

Stachel, H. (2006). Zur Rekonstruktion digitaler Bilder - Descriptive Geometry meets Computer Vision. Festvortrag aus Anlass des 60.Geburtstages von Prof. Weiß, Dresden, EU. http://hdl.handle.net/20.500.12708/117932 ( reposiTUm)

Stachel, H. (2006). Zur Rekonstruktion digitaler Bildpaare. Budapest University of Technology and Economy, Budapest, EU. http://hdl.handle.net/20.500.12708/118034 ( reposiTUm)

Stachel, H. (2006). Descriptive Geometry Meets Computer Vision - The Geometry of Two Images. Faculty of Civil Engineering, University of Rijeka, Croatia, Rijeka, EU. http://hdl.handle.net/20.500.12708/118038 ( reposiTUm)

Stachel, H. (2006). Remarks on Higher-Order Rigidity. 1st Croatian Conference on Geometry and Graphics, Bjelolasica, Non-EU. http://hdl.handle.net/20.500.12708/118039 ( reposiTUm)

Stachel, H. (2006). The reconstruction of two photos. 23rd Conference on Descriptive Geometry and Engineering Graphics, Novi Sad/Serbia, Non-EU. http://hdl.handle.net/20.500.12708/118040 ( reposiTUm)

Stachel, H. (2004). Ivory’s Theorem in Hyperbolic Spaces. Internat. School-Conference on Analysis and Geometry, Novosibirsk, Russia, Austria. http://hdl.handle.net/20.500.12708/117275 ( reposiTUm)

Stachel, H. (2004). On Jack Phillips’ Spatial Involute Gearing. 11th Internat. Conference on Geometry and Graphics, Guangzhou, China, Austria. http://hdl.handle.net/20.500.12708/117274 ( reposiTUm)

Stachel, H. (2004). The role of Descriptive Geometry in today’s Engineering Design curriculum. 22nd Yugoslav Conference on Descriptive Geometry and Engineering Graphics “moNGeometria 2004,” Belgrade, Austria. http://hdl.handle.net/20.500.12708/117277 ( reposiTUm)

Stachel, H. (2004). On Jack Phillips’ new spatial involute gearing. GCG 2004 - Geometry and Computer Graphic, Jeseniky Mountains, Czech Republic, Austria. http://hdl.handle.net/20.500.12708/117276 ( reposiTUm)

Stachel, H. (2004). Ivory’s Theorem in Hyperbolic Spaces. 3rd Croatian Congress of Mathematics, Split, Croatia, Austria. http://hdl.handle.net/20.500.12708/117273 ( reposiTUm)

Stachel, H. (2004). Starr oder beweglich - die entscheidende Rolle der Geometrie. Wissenswertes aus der Mathematik, TU Wien, Austria. http://hdl.handle.net/20.500.12708/117278 ( reposiTUm)

Stachel, H. (2004). Flexible Octahedra in the Hyperbolic Space. Miniworkshop in Geometry, Slovak Academy of Science, Bratislava, Austria. http://hdl.handle.net/20.500.12708/117279 ( reposiTUm)

Stachel, H. (2004). Ivory’s Theorem in Hyperbolic Spaces. Symposium on Computer Geometry SCG’2004, Kocovce, Slovakia, Austria. http://hdl.handle.net/20.500.12708/117282 ( reposiTUm)

Stachel, H. (2004). Schraubtorsen als Zahnflanken. Fortbildungstagung, Strobl, Austria. http://hdl.handle.net/20.500.12708/117280 ( reposiTUm)

Stachel, H. (2004). Remarks on Spatial Gearing. 6th International Conference of Applied Informatics, Eger, Hungary, Austria. http://hdl.handle.net/20.500.12708/117269 ( reposiTUm)

Stachel, H. (2004). Remarks on Jack Phillips. Seminar on Robotic Mechanical Systems, McGill University, Montreal, Canada, Austria. http://hdl.handle.net/20.500.12708/117270 ( reposiTUm)

Stachel, H. (2004). Die Gleichung von Dür - eine neue Kennzeichnung der Zentralrisse unter den Zentralaxonometrien. Geometrie-Tagung, Vorau, Steiermark, Austria. http://hdl.handle.net/20.500.12708/117272 ( reposiTUm)

Stachel, H. (2004). Descriptive Geometry in Today’s Design Curriculum. Design Seminar, McGill University, Montreal, Canada, Austria. http://hdl.handle.net/20.500.12708/117271 ( reposiTUm)

Stachel, H. (2003). Darstellende Geometrie heute. Fortbildungstagung, Strobl, Austria. http://hdl.handle.net/20.500.12708/116540 ( reposiTUm)

Stachel, H. (2003). Räumliche Verzahnungen von Disteli bis Phillips. Festkolloquium zum 75.Geburtstag von em.Univ.Prof. J.P. Tschupik, Innsbruck, Austria. http://hdl.handle.net/20.500.12708/116539 ( reposiTUm)

Stachel, H. (2003). Räumliche Verzahnungen, von Disteli bis Phillips. 8. Österreichisches Mathematikertreffen, Bolzano, Italy, Austria. http://hdl.handle.net/20.500.12708/116538 ( reposiTUm)

Stachel, H. (2002). What is Descriptive Geometry and what are its benefits? Jubiläumstagung des Lehrstuhles für Geometrie, Budapest, Austria. http://hdl.handle.net/20.500.12708/116143 ( reposiTUm)

Stachel, H. (2002). Remarks on Bricard’s Flexible Octahedra of Type 3. 10th ICGG, Kiev, Ukraine, Austria. http://hdl.handle.net/20.500.12708/116142 ( reposiTUm)

Stachel, H. (2002). Flexible polyhedra. Geometrisches Seminar, Budapest, Austria. http://hdl.handle.net/20.500.12708/116144 ( reposiTUm)

Stachel, H. (2002). Bemerkungen zu Typ 3 der Bricardschen Oktaeder. Geometrie-Tagung, Vorau, Steiermark, Austria. http://hdl.handle.net/20.500.12708/116140 ( reposiTUm)

Stachel, H. (2002). Flexible Octahedra in the Hyperbolic Space. Janos Bolyai Conference on Hyperbolic Geometry, Budapest, Austria. http://hdl.handle.net/20.500.12708/116141 ( reposiTUm)

Stachel, H. (2002). Flexible polyhedra and Ivory’s theorem. Seminar des Instituts für Mathematik und Informatik, Debrecen, Austria. http://hdl.handle.net/20.500.12708/116139 ( reposiTUm)

Stachel, H. (2002). Mathematik für die Schule: Polyeder. Tag der offenen Tür der Institute für Mathematik, TU Wien, Austria. http://hdl.handle.net/20.500.12708/116138 ( reposiTUm)

Stachel, H. (2017). Review - F.A. Farris: Creating Symmetry. http://hdl.handle.net/20.500.12708/39255 ( reposiTUm)

Stachel, H. (2009). A Kinematic Approach to Kokotsakis Meshes (No. 201). http://hdl.handle.net/20.500.12708/35791 ( reposiTUm)

Stachel, H. (2007). Scientific Report on the ESI-Program “Rigidity and Flexibility” 2006. http://hdl.handle.net/20.500.12708/31793 ( reposiTUm)

Stachel, H. (2006). Descriptive Geometry meets computer vision the geometry of two images. http://hdl.handle.net/20.500.12708/31752 ( reposiTUm)

Figliolini, G., Stachel, H., & Angeles, J. (2005). On Martin Disteli’s Main Achievements. http://hdl.handle.net/20.500.12708/31715 ( reposiTUm)

Odehnal, B., & Stachel, H. (2004). The upper talocalcanean join. http://hdl.handle.net/20.500.12708/31666 ( reposiTUm)

Stachel, H. (2004). On spatial involute gearing. http://hdl.handle.net/20.500.12708/31658 ( reposiTUm)

Stachel, H., & Wallner, J. (2003). Ivory’s Theorem in Hyperbolic Spaces. http://hdl.handle.net/20.500.12708/31609 ( reposiTUm)

Stachel, H. (2003). Flexible Octahedra in the Hyperbolic Space. http://hdl.handle.net/20.500.12708/31616 ( reposiTUm)