Havlicek, H. (2023). Affine metric geometry and weak orthogonal groups. Mitteilungen Der Mathematischen Gesellschaft in Hamburg, 43. ( reposiTUm)

Havlicek, H., & Svozil, K. (2022). Completing bases in four dimensions. Journal of Physics A: Mathematical and Theoretical, 55(10), 105304. https://doi.org/10.1088/1751-8121/ac4919 ( reposiTUm)

Havlicek, H., Kreuzer, A., Kroll, H.-J., & Sörensen, K. (2022). Helmut Karzel (1928–2021). Journal of Geometry, 113(3), Article 44. https://doi.org/10.1007/s00022-022-00651-5 ( reposiTUm)

Havlicek, H., & Kreuzer, A. (2021). 50 Years of the Journal of Geometry. Journal of Geometry, 112(49). https://doi.org/10.1007/s00022-021-00614-2 ( reposiTUm)

Havlicek, H. (2021). Projective metric geometry and Clifford algebras. Results in Mathematics, 76(4), 1–22. https://doi.org/10.1007/s00025-021-01516-0 ( reposiTUm)

Havlicek, H., & Kreuzer, A. (2021). Martin Barner (1921-2020). Journal of Geometry, 112(24). https://doi.org/10.1007/s00022-021-00581-8 ( reposiTUm)

Havlicek, H., Pasotti, S., & Pianta, S. (2021). Automorphisms of a Clifford-like parallelism. Advances in Geometry, 21(1), 63–73. https://doi.org/10.1515/advgeom-2020-0027 ( reposiTUm)

Havlicek, H., Pasotti, S., & Pianta, S. (2021). Characterizing Clifford parallelism among Clifford-like parallelism. Beitraege Zur Algebra Und Geometrie, 62(1), 37–54. https://doi.org/10.1007/s13366-020-00509-4 ( reposiTUm)

Havlicek, H., Pasotti, S., & Pianta, S. (2019). Clifford-like parallelisms. Journal of Geometry, 110, Article 2. https://doi.org/10.1007/s00022-018-0456-9 ( reposiTUm)

Havlicek, H., & Svozil, K. (2018). Dimensional lifting through generalized Gram-Schmidt process. Entropy, 20(4), 284. https://doi.org/10.3390/e20040284 ( reposiTUm)

Havlicek, H. (2017). Georg Glaeser, Hellmuth Stachel, Boris Odehnal: The Universe of Conics – From Ancient Greeks to 21st Century Developments : Springer Spektrum, 2016, viii+488 Seiten, ISBN 978-3-662-45449-7 (print), ISBN 978-3-662-45450-3 (eBook). Mathematische Semesterberichte, 64(2), 223–225. https://doi.org/10.1007/s00591-017-0186-3 ( reposiTUm)

Havlicek, H., & Riesinger, R. (2017). PENCILLED REGULAR PARALLELISMS. Acta Mathematica Hungarica, 153(1), 249–264. https://doi.org/10.1007/s10474-017-0742-2 ( reposiTUm)

Havlicek, H., & Zanella, C. (2017). Linear sets in the projective line over the endomorphism ring of a finite field. Journal of Algebraic Combinatorics, 46(2), 297–312. https://doi.org/10.1007/s10801-017-0753-7 ( reposiTUm)

Kreuzer, A., & Havlicek, H. (2017). Obituary: Walter Benz (1931–2017). Journal of Geometry, 108(1), 1–3. https://doi.org/10.1007/s00022-017-0376-0 ( reposiTUm)

Havlicek, H. (2016). Clifford parallelisms and external planes to the Klein quadric. Journal of Geometry, 107(2), 287–303. https://doi.org/10.1007/s00022-015-0303-1 ( reposiTUm)

Saniga, M., Havlicek, H., Holweck, F., Planat, M., & Pracna, P. (2015). Veldkamp-space aspects of a sequence of nested binary Segre varieties. Annales de l’Institut Henri Poincaré D, 2(3), 309–333. https://doi.org/10.4171/aihpd/20 ( reposiTUm)

Havlicek, H. (2015). Von Staudt’s theorem revisited. Aequationes Mathematicae, 89(3), 459–472. https://doi.org/10.1007/s00010-013-0218-6 ( reposiTUm)

Havlicek, H. (2015). A note on Clifford parallelisms in characteristic two. PUBLICATIONES MATHEMATICAE DEBRECEN, 86(1–2), 119–134. http://hdl.handle.net/20.500.12708/151768 ( reposiTUm)

Havlicek, H. (2015). Buchbesprechung: Bilder der Mathematik. Mathematische Semesterberichte, 62(1), 118. http://hdl.handle.net/20.500.12708/151905 ( reposiTUm)

Shaw, R., Gordon, N., & Havlicek, H. (2013). Tetrads of lines spanning PG(7,2). Simon Stevin, 20, 735–752. http://hdl.handle.net/20.500.12708/155658 ( reposiTUm)

Blunck, A., & Havlicek, H. (2013). Geometric structures on finite- and infinite-dimensional Grassmannians. Contributions to Algebra and Geometry, 54(2), 533–547. https://doi.org/10.1007/s13366-012-0096-4 ( reposiTUm)

Havlicek, H., & Kreuzer, A. (2013). A letter from the editors. Journal of Geometry, 104(3), 399–399. https://doi.org/10.1007/s00022-013-0183-1 ( reposiTUm)

Havlicek, H., Kosiorek, J., & Odehnal, B. (2013). A point model for the free cyclic submodules over ternions. Results in Mathematics, 63, 1071–1078. http://hdl.handle.net/20.500.12708/155657 ( reposiTUm)

Havlicek, H. (2013). Projective Ring Lines and Their Generalisations. Electronic Notes in Discrete Mathematics, 40, 151–155. https://doi.org/10.1016/j.endm.2013.05.028 ( reposiTUm)

Hischenhuber, B., Havlicek, H., Todoric, J., Höllrigl-Binder, M., Schreiner, W., & Knapp, B. (2013). Differential geometric analysis of alterations in MH-helices. Journal of Computational Chemistry, 34, 1862–1879. http://hdl.handle.net/20.500.12708/155661 ( reposiTUm)

Hischenhuber, B., Havlicek, H., Todoric, J., Höllrigl-Binder, M., Schreiner, W., & Knapp, B. (2013). Corrigendum: Differential geometric analysis of alterations in MH-helices. Journal of Computational Chemistry, 34, 2834. https://doi.org/10.1002/jcc.23453 ( reposiTUm)

Havlicek, H. (2012). Divisible Designs, Laguerre Geometry, and Beyond. Journal of Mathematical Sciences, 186(6), 882–926. https://doi.org/10.1007/s10958-012-1042-6 ( reposiTUm)

Blunck, A., & Havlicek, H. (2012). Geometries on sigma-Hermitian matrices. Journal of Mathematical Sciences, 186, 715–719. http://hdl.handle.net/20.500.12708/164184 ( reposiTUm)

Havlicek, H., Odehnal, B., & Saniga, M. (2012). On invariant notions of Secre varieties in binary projective spaces. DESIGNS CODES AND CRYPTOGRAPHY, 62(3), 343–356. https://doi.org/10.1007/s10623-011-9525-x ( reposiTUm)

Shaw, R., Gordon, N., & Havlicek, H. (2012). Aspects of the Segre variety S1,1,1(2). Designs, Codes and Cryptography, 62(2), 225–239. https://doi.org/10.1007/s10623-011-9508-y ( reposiTUm)

Havlicek, H., Matras, A., & Pankov, M. (2011). Geometry of free cyclic submodules over ternions. Abhandlungen Aus Dem Mathematischen Seminar Der Universität Hamburg, 81, 237–249. http://hdl.handle.net/20.500.12708/162524 ( reposiTUm)

Havlicek, H., Odehnal, B., & Saniga, M. (2010). Möbius pairs of simplices and commuting Pauli operators. Mathematica Pannonica, 21, 115–128. http://hdl.handle.net/20.500.12708/167745 ( reposiTUm)

Blunck, A., & Havlicek, H. (2010). Projective lines over Jordan systems and geometry of Hermitian matrices,. Linear Algebra and Its Applications, 433, 672–680. http://hdl.handle.net/20.500.12708/167747 ( reposiTUm)

Havlicek, H., Odehnal, B., & Saniga, M. (2009). Factor-group-generated polar spaces and (multi-)qudits. SIGMA - Symmetry, Integrability and Geometry - Methods and Applications, 5(096), 15. http://hdl.handle.net/20.500.12708/166104 ( reposiTUm)

Havlicek, H. (2009). Zum 80.Geburtstag von Heinrich Brauner (1928-1990). Internationale Mathematische Nachrichten, 210, 33–40. http://hdl.handle.net/20.500.12708/166085 ( reposiTUm)

Havlicek, H., & Saniga, M. (2009). Vectors, cyclic submodules and projective spaces linked with ternions. Journal for Geometry and  Graphics, 92, 79–90. http://hdl.handle.net/20.500.12708/166084 ( reposiTUm)

Saniga, M., Havlicek, H., Planat, M., & Pracna, P. (2008). “Twin Fano-Snowflakes” over the smallest ring of ternions. Symmetry, Integrability and Geometry - Methods and Applications, 4. http://hdl.handle.net/20.500.12708/170477 ( reposiTUm)

Huang, W. L., & Havlicek, H. (2008). Diameter preserving surjections in the geometry of matrices. Linear Algebra and Its Applications, 429, 376–386. http://hdl.handle.net/20.500.12708/170476 ( reposiTUm)

Blunck, A., Havlicek, H., & Zanella, C. (2008). Divisible designs from twisted dual numbers. Designs, Codes and Cryptography, 47, 11–20. http://hdl.handle.net/20.500.12708/170473 ( reposiTUm)

Havlicek, H., & Zanella, C. (2008). Incidence and combinatorial properties of linear complexes. Results in Mathematics, 51, 261–274. http://hdl.handle.net/20.500.12708/170475 ( reposiTUm)

Havlicek, H., & Saniga, M. (2008). Projective ring line of an arbitrary single qudit. J.Phys.A: Math.Gen., 41. http://hdl.handle.net/20.500.12708/170474 ( reposiTUm)

Saniga, M., Planat, M., Pracna, P., & Havlicek, H. (2007). The Veldkamp-space of two-qubits. Symmetry, Integrability and Geometry - Methods and Applications, 3, 7. http://hdl.handle.net/20.500.12708/168733 ( reposiTUm)

Blunck, A., Havlicek, H., & Zanella, C. (2007). Lifting of Divisible Designs. Designs, Codes and Cryptography, 42, 1–14. http://hdl.handle.net/20.500.12708/168728 ( reposiTUm)

Havlicek, H., & Saniga, M. (2007). Projective ring line of a specific qudit. J.Phys.A: Math.Gen., 40, 943–952. http://hdl.handle.net/20.500.12708/168729 ( reposiTUm)

Havlicek, H. (2007). From pentacyclic coordinates to chain geometries, and back. Mitt.Math.Ges. Hamburg, 26, 75–94. http://hdl.handle.net/20.500.12708/168743 ( reposiTUm)

Havlicek, H., & Semrl, P. (2006). From Geometry to Invertibility Preservers. Studia Mathematica, 174, 99–109. http://hdl.handle.net/20.500.12708/172067 ( reposiTUm)

Havlicek, H. (2006). Divisible Designs, Laguerre Geometry and Beyond. Quaderni Del Seminario Matematico Di Brescia, 11, 1–64. http://hdl.handle.net/20.500.12708/172069 ( reposiTUm)

Blunck, A., & Havlicek, H. (2005). On distant-isomorphisms of projective lines. Aequationes Mathematicae, 69, 146–163. http://hdl.handle.net/20.500.12708/171914 ( reposiTUm)

Gmainer, J., & Havlicek, H. (2005). Isometries and collineations of the Cayley Surface. Innovations in Incidence Geometry, 2, 111–129. http://hdl.handle.net/20.500.12708/171928 ( reposiTUm)

Havlicek, H., & Pankov, M. (2005). Transformations on the Product of Grassmann Spaces. Demonstratio Mathematica, 38(3), 675–688. http://hdl.handle.net/20.500.12708/171910 ( reposiTUm)

Havlicek, H. (2005). Cayley’s surface revisited. Journal of Geometry, 82, 71–82. http://hdl.handle.net/20.500.12708/171915 ( reposiTUm)

Giese, S., Havlicek, H., & Schulz, R.-H. (2005). Some constructions of divisible designs from Laguerre geometries. Discrete Mathematics, 301, 74–82. http://hdl.handle.net/20.500.12708/171925 ( reposiTUm)

Blunck, A., & Havlicek, H. (2005). On bijections that preserve complementarity of subspaces. APPLICABLE ANALYSIS AND DISCRETE MATHEMATICS, 301, 46–56. http://hdl.handle.net/20.500.12708/171913 ( reposiTUm)

Havlicek, H. (2024). Projective Metric Geometry and Clifford Algebras. In A. Aguglia, M. Buratti, M. Ceria, B. Csajbók, M. Giulietti, A. Montinaro, & F. Pavese (Eds.), Combinatorics 2024 (pp. 88–88). https://doi.org/10.34726/7739 ( reposiTUm)

Blunck, A., & Havlicek, H. (2011). Geometries on sigma-Hermitian matrices. In Modern Algebra and its Applications (pp. 27–31). Georgian National Science Foundation, Georgian Technical University. http://hdl.handle.net/20.500.12708/41089 ( reposiTUm)

Havlicek, H. (2008). Erinnerungen an Heinrich Brauner (1928-1990). In 33. Süddeutsches Differentialgeometrie-Kolloquium (pp. 14–34). http://hdl.handle.net/20.500.12708/40790 ( reposiTUm)

Havlicek, H. (2005). Higher Order Contact on Cayley’s ruled cubic Surface. In 30th Colloquium on Differential Geometry (pp. 27–34). Technische Universität Dresden. http://hdl.handle.net/20.500.12708/40579 ( reposiTUm)

Havlicek, H. (2021). El trabajo de Germán Ancochea sobre proyectividades, preservadores armónicos y semi-homomorphismos. In Tributo a un pionero de la investigacíon matemática española (pp. 139–166). Real Sociedad Matemática Espanola. http://hdl.handle.net/20.500.12708/30595 ( reposiTUm)

Havlicek, H. (2012). Mathematik und Landkarten. In Kartographisches Denken (pp. 128–132). Springer Verlag. http://hdl.handle.net/20.500.12708/27662 ( reposiTUm)

Blunck, A., Havlicek, H., & Zanella, C. (2010). Blocking sets in chain geometries. In Trends in Incidence and Galois Geometries. A Tribute to Giuseppe Tallini, (pp. 39–50). Aracne Editrice. http://hdl.handle.net/20.500.12708/27008 ( reposiTUm)

Havlicek, H. (2022). Lineare Algebra für Technische Mathematik (4. korrigierte und erweiterte Auflage, Vol. 16). Heldermann. ( reposiTUm)

Havlicek, H. (Ed.). (2012). Lineare Algebra für Technische Mathematiker. Heldermann Verlag. http://hdl.handle.net/20.500.12708/23562 ( reposiTUm)

Havlicek, H. (2008). Lineare Algebra für Technische Mathematiker. Heldermann Verlag. http://hdl.handle.net/20.500.12708/22783 ( reposiTUm)

Havlicek, H., Manhart, F., & Odehnal, B. (Eds.). (2008). 33. Süddeutsches Kolloquium über Differentialgeometrie. TU WIEN. http://hdl.handle.net/20.500.12708/22785 ( reposiTUm)

Havlicek, H. (Ed.). (2006). Lineare Algebra für Technische Mathematiker. Heldermann Verlag. http://hdl.handle.net/20.500.12708/22165 ( reposiTUm)

Havlicek, H. (2022, April 7). Projective Metric Geometry and Clifford Algebras [Presentation]. Einladung an die University of Brescia, Brescia, Italy. ( reposiTUm)

Havlicek, H. (2022, April 8). Parallelisms and Algebras: A Tribute to Silvia Pianta [Conference Presentation]. Geometric Structures and Loops - A Day in Honor of Silvia Pianta and Elena Zizioli, Catholic University of Brescia, Italy. ( reposiTUm)

Havlicek, H. (2019). Pencilled Regular Parallelisms. Conference on Geometry - Theory and Applications, Vorau, Austria. http://hdl.handle.net/20.500.12708/122890 ( reposiTUm)

Havlicek, H. (2018). Regular Parallelisms in Terms of the Klein Quadric. Catholic University of Brescia, Italien, Austria. http://hdl.handle.net/20.500.12708/122482 ( reposiTUm)

Havlicek, H. (2018). Pencilled Regular Parallelisms. Combinatorics 2018, Arco, Italy. http://hdl.handle.net/20.500.12708/122487 ( reposiTUm)

Havlicek, H. (2018). Begegnungen mit Helmut Karzel. Festkolloquium zum 90.Geburtstag von Prof. DDr. Helmut Karzel, Berlin, Germany. http://hdl.handle.net/20.500.12708/122481 ( reposiTUm)

Havlicek, H. (2017). Linear sets in the projective line over the endomorphism ring of a finite field. Fifth Irsee Conference, Irsee, Germany. http://hdl.handle.net/20.500.12708/122093 ( reposiTUm)

Havlicek, H. (2017). 170 Years of Harmonicity Preservers. University of Gdansk, XI Polnocne Spotkania Geometryczne, Poland. http://hdl.handle.net/20.500.12708/122092 ( reposiTUm)

Havlicek, H. (2016). Harmonicity Preservers of Projective Lines. Combinatorics, Ischia Porto, Italy. http://hdl.handle.net/20.500.12708/121666 ( reposiTUm)

Havlicek, H. (2015). Clifford parallelisms and external planes to the Klein quadric. Catholic University of Brescia, Italien, Austria. http://hdl.handle.net/20.500.12708/121383 ( reposiTUm)

Havlicek, H. (2015). Von Staudt’s Theorem Revisited. Conference on Geometry, Vorau, Austria. http://hdl.handle.net/20.500.12708/121381 ( reposiTUm)

Havlicek, H. (2015). Clifford parallelisms and external planes to the Klein quadric. University of Padova, Vicenza, Italy. http://hdl.handle.net/20.500.12708/121189 ( reposiTUm)

Havlicek, H. (2015). Harmonicity Preservers. Giornate di Geometria, Caserta, Italy. http://hdl.handle.net/20.500.12708/121382 ( reposiTUm)

Havlicek, H. (2014). Preserver Problems in Geometry. 6th Podlasie Conference on Mathematics, Bialystok, Polen, EU. http://hdl.handle.net/20.500.12708/120941 ( reposiTUm)

Havlicek, H. (2014). Tetrads of Lines Spanning PG(7,2). Finite Geometries, Irsee Conference, Irsee, Deutschland, EU. http://hdl.handle.net/20.500.12708/120943 ( reposiTUm)

Havlicek, H. (2013). A Note on Segre Varieties in Characteristic Two. 11th International Conference on Geometry and its Applications, Varna, Bulgarien, EU. http://hdl.handle.net/20.500.12708/120515 ( reposiTUm)

Havlicek, H. (2013). A Note on Segre Varieties in Characteristic Two. Workshop & Summer School on Finite Semifields, Padova, Italy, EU. http://hdl.handle.net/20.500.12708/120490 ( reposiTUm)

Havlicek, H. (2012). Matrix Spaces vs. Projektive Lines over Rings. Kolloquium, Leopold-Franzens Universität Innsbruck, Austria. http://hdl.handle.net/20.500.12708/120078 ( reposiTUm)

Havlicek, H. (2012). Geometrie der zyklischen Untermoduln über den Ternionen. Arbeitsgemeinschaft Geometrie, Universität Hamburg, EU. http://hdl.handle.net/20.500.12708/120079 ( reposiTUm)

Havlicek, H. (2012). Projective Ring Lines and Their Generalisations. Combinatorics, Ischia Porto, EU. http://hdl.handle.net/20.500.12708/120080 ( reposiTUm)

Havlicek, H. (2011). On Möbius Pairs of Simplices. 10th Internaional Conference on Geometry and Applications, Varna, EU. http://hdl.handle.net/20.500.12708/119835 ( reposiTUm)

Havlicek, H. (2011). Mutually Inscribed an Circumscribed Simplices - Where Möbius Meets Pauli. University of Warmia and Mazury, Olzstyn, Polen, Non-EU. http://hdl.handle.net/20.500.12708/119832 ( reposiTUm)

Havlicek, H. (2011). Möbius Pairs and Pauli Operators. Conference on Geometry, Vorau, Austria. http://hdl.handle.net/20.500.12708/119834 ( reposiTUm)

Havlicek, H. (2011). Einhundert Projektionsprobleme - Ein Programm zum Zeichnen von Karten. Universität für Angewandte Kunst, Wien, Wien, Austria. http://hdl.handle.net/20.500.12708/119830 ( reposiTUm)

Havlicek, H. (2011). Laudatio auf Emer. O.Univ.Prof. Mag. Dr. Dr.h.c. Hellmut Stachel. Fakultätsrat der Fakultät für Mathematik und Geoinformation, TU Wien, Wien, Austria. http://hdl.handle.net/20.500.12708/119987 ( reposiTUm)

Havlicek, H. (2010). Matrix Spaces and Grassmannians. Universität von Padova, Vicenza, Italien, EU. http://hdl.handle.net/20.500.12708/119562 ( reposiTUm)

Havlicek, H. (2010). Diameter Preserving Surjections in the Geometry of Matrices. Combinatorics 2010, Verbania, Italien, EU. http://hdl.handle.net/20.500.12708/119563 ( reposiTUm)

Havlicek, H. (2010). Geometries on σ-Hermitian Matrices. Modern Algebra and Its Applications, Batumi, Georgien, Non-EU. http://hdl.handle.net/20.500.12708/119564 ( reposiTUm)

Havlicek, H. (2010). Geometries on σ-Hermitian Matrices. University of Warmia and Mazury, Olzstyn, Polen, Non-EU. http://hdl.handle.net/20.500.12708/119565 ( reposiTUm)

Havlicek, H. (2009). Dual Polar Spaces and the Geometry of Matrices I. Centre for Interdisciplinary Research (ZIF), Bielefeld, Deutschland, EU. http://hdl.handle.net/20.500.12708/119123 ( reposiTUm)

Havlicek, H. (2009). Dual Polar Spaces and the Geometry of Matrices III. Centre for Interdisciplinary Research (ZIF), Bielefeld, Deutschland, EU. http://hdl.handle.net/20.500.12708/119125 ( reposiTUm)

Havlicek, H. (2009). Dual Polar Spaces and the Geometry of Matrices II. Centre for Interdisciplinary Research (ZIF), Bielefeld, Deutschland, EU. http://hdl.handle.net/20.500.12708/119124 ( reposiTUm)

Havlicek, H. (2008). Gekrümmte Erdkugel - Flache Landkarte. Geometrie und Kartenentwürfe. Continuing Education for Teachers, Pädagogische Hochschule Wien, Austria. http://hdl.handle.net/20.500.12708/118727 ( reposiTUm)

Havlicek, H. (2008). Qudits and Geometry over Rings. 35th Conference on Geometry and Algebra, Berlin, EU. http://hdl.handle.net/20.500.12708/118726 ( reposiTUm)

Havlicek, H. (2008). Gekrümmte Erdkugel - Flache Landkarte. Geometrie und Kartenentwürfe. 29. Fortbildungstagung für Geometrie, St. Wolfgang, Strobl am Wolfgangsee, Austria. http://hdl.handle.net/20.500.12708/118729 ( reposiTUm)

Havlicek, H. (2008). Diameter Preserving Surjections in the Geometry of Matrices. 5th Linear Algebra Workshop, Kranjska Gora (Slovenia), EU. http://hdl.handle.net/20.500.12708/118728 ( reposiTUm)

Havlicek, H. (2008). Adjacency Preservers vs. Diameter Preservers. University of Warmia and Mazury, Olzstyn, Polen, Non-EU. http://hdl.handle.net/20.500.12708/118774 ( reposiTUm)

Havlicek, H. (2007). A Mathematician’s Insight into the Saniga-Planat Theorem. Finite Projective Geometry in Quantum Theory, Tatranska Lomnica, Slovakia, EU. http://hdl.handle.net/20.500.12708/118250 ( reposiTUm)

Havlicek, H. (2007). A Spread from Cayley’s Ruled Cubic Surface. 8th International Conference on Geometry and Applications, Varna, Bulgarien, EU. http://hdl.handle.net/20.500.12708/118251 ( reposiTUm)

Havlicek, H. (2007). From Geometry to Invertibility Preservers. Conference on Geometry, Vorau, Austria. http://hdl.handle.net/20.500.12708/118249 ( reposiTUm)

Havlicek, H. (2007). Geometric Interpretations of Quadratic Field Extensions. Catholic University of Brescia, Italien, Austria. http://hdl.handle.net/20.500.12708/118247 ( reposiTUm)

Havlicek, H. (2007). The Betten-Walker Spread Revisited. Giornata di Geometria Combinatoria in memoria di Alessandro Bichara, Rom, Italien, EU. http://hdl.handle.net/20.500.12708/118248 ( reposiTUm)

Havlicek, H. (2006). Über die Schmiegtangentenkongruenz der Cayley-Fläche. Dresden University of Technology, Dresden, EU. http://hdl.handle.net/20.500.12708/117909 ( reposiTUm)

Havlicek, H. (2006). Jenseits der pentazyklischen Koordinaten. TU Wien, Austria. http://hdl.handle.net/20.500.12708/117908 ( reposiTUm)

Havlicek, H. (2006). Jenseits der pentazyklischen Koordinaten. Colloquium on the occasion of the 75th birthday of Prof. Walter Benz, Hamburg, EU. http://hdl.handle.net/20.500.12708/117904 ( reposiTUm)

Havlicek, H. (2006). Osculating Tangents of Cayley’s Ruled Surface and the Betten-Walker Spread. 1st Croatian Conference on Geometry and Graphics, Bjelolasica, Non-EU. http://hdl.handle.net/20.500.12708/117907 ( reposiTUm)

Havlicek, H. (2006). Divisible Designs from Twisted Dual Numbers. Finite Geometries, Second Irsee Conference, Irsee, EU. http://hdl.handle.net/20.500.12708/117906 ( reposiTUm)

Havlicek, H. (2006). Lifting of Divisible Designs. Combinatorics, Ischia Porto, EU. http://hdl.handle.net/20.500.12708/117905 ( reposiTUm)

Havlicek, H. (2005). Die Isometrien der Cayleyschen Fläche. 16th Congress of the Austrian Mathematical Society - DMV Jahrestagung, Klagenfurt, Austria. http://hdl.handle.net/20.500.12708/117846 ( reposiTUm)

Havlicek, H. (2005). A Distance Space on Cayley’s Ruled Surface. 7th International Conference on Geometry and Applications, Varna, Non-EU. http://hdl.handle.net/20.500.12708/117845 ( reposiTUm)

Havlicek, H. (2005). Berührung höherer Ordnung auf der Cayleyschen Fläche. 30. Süddeutsches Differentialgeometrie-Kolloquium, Dresden, EU. http://hdl.handle.net/20.500.12708/117844 ( reposiTUm)

Havlicek, H., & Blunck, A. (2005). Jordan homomorphisms of rings and their action on projective lines. Gastvortrag, Masaryk University Brno, Czech Republic, EU. http://hdl.handle.net/20.500.12708/117923 ( reposiTUm)

Havlicek, H. (2004). Windschiefe Kubiken auf der Cayley Fläche. Geometrie-Tagung, Vorau, Steiermark, Austria. http://hdl.handle.net/20.500.12708/117350 ( reposiTUm)

Havlicek, H. (2004). My favorite 12-cap in PG(5,3). Kombinatorik-Kolloquium, Magdeburg, Magedeburg, Austria. http://hdl.handle.net/20.500.12708/117351 ( reposiTUm)

Havlicek, H. (2003). A Three-dimensional Laguerre Geometry. 8. Österreichisches Mathematikertreffen, Bolzano, Italy, Austria. http://hdl.handle.net/20.500.12708/116604 ( reposiTUm)

Havlicek, H. (2003). A Parallelism Based on the Jacobson Radical of a Ring. 6th International Conference on Geometry and Applications, Varna, Bulgarien, Austria. http://hdl.handle.net/20.500.12708/116618 ( reposiTUm)

Havlicek, H. (2003). Distant-Automorphisms of the Projective Line over a Ring. 30th Meeting on Geometry and Algebra, Berlin, Deutschland, Austria. http://hdl.handle.net/20.500.12708/116616 ( reposiTUm)

Havlicek, H. (2003). Dreidimensionale Kettengeometrien und ihre Visualisierung. Dresden Symposium Geometry, Dresden, Austria. http://hdl.handle.net/20.500.12708/116617 ( reposiTUm)

Havlicek, H. (2003). Abbildungen in der Geometrie. Technische Universität Graz, Austria. http://hdl.handle.net/20.500.12708/116619 ( reposiTUm)

Havlicek, H. (2003). Vom Kreis zu linearen MDS-Codes. University of Greifswald (Germany), Deutschland, Austria. http://hdl.handle.net/20.500.12708/116620 ( reposiTUm)

Havlicek, H. (2002). Construction and Applications of Spreads: An Introduction. Pattern Recognition and Computer Vision Colloquium, Spring 2002. Czech Technical University, Prag, Austria. http://hdl.handle.net/20.500.12708/116151 ( reposiTUm)

Havlicek, H. (2002). Von der Netzprojektion zu algebraischen Faserungen: Ein Streifzug durch die Liniengeometrie. Technical University of Dresden, Dresden, Austria. http://hdl.handle.net/20.500.12708/116154 ( reposiTUm)

Havlicek, H. (2002). Jordan Homomorphismen und harmonische Abbildungen. 29th Meeting on Geometry and Algebra, Berlin, Austria. http://hdl.handle.net/20.500.12708/116149 ( reposiTUm)

Havlicek, H. (2002). Höhen eines Tetraeders und spurfreie quadratische Formen. University of Potsdam, Deutschland, Austria. http://hdl.handle.net/20.500.12708/116155 ( reposiTUm)

Havlicek, H. (2002). Chain Geometries over Skew Fields. Catholic University of Brescia, Italien, Austria. http://hdl.handle.net/20.500.12708/116158 ( reposiTUm)

Havlicek, H. (2002). Line Models for Projective Lines over Rings. Colloquium on the occasion of the 50th anniversary of the Department of Geometry, Budapest University of Technology, Ungarn, Austria. http://hdl.handle.net/20.500.12708/116159 ( reposiTUm)

Havlicek, H. (2002). On Bijections that Preserve Complementary Subspaces. Combinatorics 2002, Maratea, Italien, Austria. http://hdl.handle.net/20.500.12708/116157 ( reposiTUm)

Havlicek, H. (2002). Vier Höhen - eine Gleichung. Geometrie-Tagung, Vorau, Steiermark, Austria. http://hdl.handle.net/20.500.12708/116156 ( reposiTUm)

Havlicek, H. (2002). Some Remarks on the Theorem of von Staudt-Hua. Colloquium on the occasion of the 50th anniversary of the Department of Geometry, Budapest University of Technology, Ungarn, Austria. http://hdl.handle.net/20.500.12708/116160 ( reposiTUm)

Havlicek, H. (2002). Im Anfang war der Kreis. Colloquium on the occasion of the 60th birthday of Prof. Ralph-Hardo Schulz, Free University of Berlin, Deutschland, Austria. http://hdl.handle.net/20.500.12708/116161 ( reposiTUm)

Havlicek, H., & Saniga, M. (2010). Kooperationsgruppe #gtEndliche projektive Ringgeometrien#lt (ISSN: 1611-9614). http://hdl.handle.net/20.500.12708/36637 ( reposiTUm)

Havlicek, H. (2014). Theo de Jong: Lineare Algebra. Pearson Studium, 2013, 240 Seiten, ISBN 978-3868941135 [Review of Lineare Algebra, by Theo de Jong]. Mathematische Semesterberichte, 61(1). Springer. https://doi.org/10.1007/s00591-014-0131-7 ( reposiTUm)