Jung, D. E., Amann, J., Einck, V. J., Baltrukonis, J., Verrastro, L. D., Dawicki, A., Pasdarikia, M., Arbabi, A., Liedl, G., Otto, A., & Watkins, J. J. (2026). All-Inorganic TiO₂ Nanoparticle-Based Metalenses Manufactured by Direct Nanoimprint Lithography for High Energy Applications: Femtosecond Laser-Induced Damage Threshold Testing. Advanced Optical Materials, 14(2), Article e01769. https://doi.org/10.1002/adom.202501769 ( reposiTUm)

Florian, T., Schricker, K., Zenz, C., Otto, A., Schmidt, L., Diegel, C., Friedmann, H., Seibold, M., Hellwig, P., Fröhlich, F., Nagel, F., Kallage, P., Buttazzoni, M., Rack, A., Requardt, H., Chen, Y., & Bergmann, J. P. (2025). Combining in situ synchrotron X-ray imaging and multiphysics simulation to reveal pore formation dynamics in laser welding of copper. INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 204, Article 104224. https://doi.org/10.1016/j.ijmachtools.2024.104224 ( reposiTUm)

Mosbah, S., Gomez Vazquez, R., Zenz, C., Tourret, D., & Otto, A. (2025). A particle-based approach for the prediction of grain microstructures in solidification processes. Computational Materials Science, 255, Article 113918. https://doi.org/10.1016/j.commatsci.2025.113918 ( reposiTUm)

Zenz, C., Cook, P. S., Vörös, L., & Otto, A. (2025). A critical comparison of one- and two-fluid approaches for the simulation of laser-induced melt pool formation and vaporisation. Discover Materials, 5(1), Article 266. https://doi.org/10.1007/s43939-025-00434-0 ( reposiTUm)

Fürbacher, R., Liedl, G., Grünsteidl, G., & Otto, A. (2024). Icing wind tunnel and erosion field tests of superhydrophobic surfaces caused by femtosecond laser processing. Wind, 4(2), 155–171. https://doi.org/10.3390/wind4020008 ( reposiTUm)

Fürbacher, R., Grünsteidl, G., Otto, A., & Liedl, G. (2024). Chemical and UV durability of hydrophobic and icephobic surface layers on femtosecond laser structured stainless steel. Coatings, 14(8), Article 924. https://doi.org/10.3390/coatings14080924 ( reposiTUm)

Zenz, C., Buttazzoni, M., Florian, T., Crespo Armijos, K. E., Gomez Vazquez, R., Liedl, G., & Otto, A. (2024). A compressible multiphase Mass-of-Fluid model for the simulation of laser-based manufacturing processes. Computers and Fluids, 268, Article 106109. https://doi.org/10.1016/j.compfluid.2023.106109 ( reposiTUm)

Quintero, F., Doval, A. F., Goitia, A., Vazquez, R., Crespo, K., Barciela, R., Fernández-Arias, M., Lusquiños, F., Otto, A., & Pou, J. (2023). Analysis of the oscillations induced by a supersonic jet applied to produce nanofibers. International Journal of Mechanical Sciences, 238, Article 107826. https://doi.org/10.1016/j.ijmecsci.2022.107826 ( reposiTUm)

Zenz, C., Buttazzoni, M., Martínez Ceniceros, M., Gomez Vazquez, R., Blasco Puchades, J. R., Portoles, L., & Otto, A. (2023). Simulation-based process optimization of laser-based powder bed fusion by means of beam shaping. Additive Manufacturing, 77, Article 103793. https://doi.org/10.1016/j.addma.2023.103793 ( reposiTUm)

Klamert, V., Schiefermair, L., Bublin, M., & Otto, A. (2023). In Situ Analysis of Curling Defects in Powder Bed Fusion of Polyamide by Simultaneous Application of Laser Profilometry and Thermal Imaging. Applied Sciences, 13(12), Article 7179. https://doi.org/10.3390/app13127179 ( reposiTUm)

Klamert, V., Achsel, T., Toker, E., Bublin, M., & Otto, A. (2023). Real-time optical detection of artificial coating defects in PBF-LB/P using a low-cost camera solution and convolutional neural networks. Applied Sciences, 13(20), Article 11273. https://doi.org/10.3390/app132011273 ( reposiTUm)

Kumar, D., Liedl, G., Otto, A., & Artner, W. (2022). Insights into the Correlation between Residual Stresses, Phase Transformation, and Wettability of Femtosecond Laser-Irradiated Ductile Iron. Nanomaterials, 12(8), 1271. https://doi.org/10.3390/nano12081271 ( reposiTUm)

Matsumoto, H., Lin, Z., Schrauben, J. N., Kleinert, J., Gomez Vazquez, R., Buttazzoni, M., & Otto, A. (2022). Rapid formation of high aspect ratio through holes in thin glass substrates using an engineered, QCW laser approach. Applied Physics A: Materials Science and Processing, 128(4), Article 269. https://doi.org/10.1007/s00339-022-05404-4 ( reposiTUm)

Kumar, D., Sauer, M., Kroechert Ching, K., Kalss, G., Catarina V.D. dos Santos, A., Ramer, G., Foelske, A., Lendl, B., Liedl, G., & Otto, A. (2021). Wettability transition of femtosecond laser patterned nodular cast iron (NCI) substrate. Applied Surface Science, 559(149897), 149897. https://doi.org/10.1016/j.apsusc.2021.149897 ( reposiTUm)

Buttazzoni, M., Zenz, C., Otto, A., Gómez Vázquez, R., Liedl, G., & Arias, J. L. (2021). A Numerical Investigation of Laser Beam Welding of Stainless Steel Sheets with a Gap. Applied Sciences, 11(6), 2549. https://doi.org/10.3390/app11062549 ( reposiTUm)

Bleicher, F., Haas, F., Otto, A., & Zeman, K. (2021). Production Systems. ÖWGP - New Deal in Production, JULY(July), 18–25. http://hdl.handle.net/20.500.12708/139108 ( reposiTUm)

Dobler, M., Leitz, K.-H., Otto, A., & Schmidt, M. (2018). Simulation of process dynamics in laser beam brazing. Journal of Laser Applications, 85–90. https://doi.org/10.2351/1.5062980 ( reposiTUm)

Otto, A., Vázquez, R. G., & Hartel, U. (2018). Insight into the Process : Analysis of laser beam welding by means of multiphysical process simulations. Laser Technik Journal, 15(2), 40–45. https://doi.org/10.1002/latj.201800013 ( reposiTUm)

Otto, A., Patschger, A., & Seiler, M. (2016). Numerical and Experimental Investigations of Humping Phenomena in Laser Micro Welding. Physics Procedia, 83, 1415–1423. https://doi.org/10.1016/j.phpro.2016.09.004 ( reposiTUm)

Bielak, R., Bammer, F., Otto, A., Stiglbrunner, C., Colasse, C., & Murzin, S. (2016). Simulation of forming processes with local heating of dual phase steels with use of laser beam shaping systems. Computer Optics, 40(5), 659–667. https://doi.org/10.18287/2412-6179-2016-40-5-659-667 ( reposiTUm)

Tatra, S., Vázquez, R. G., Stiglbrunner, C., & Otto, A. (2016). Numerical Simulation of Laser Ablation with Short and Ultra-short Pulses for Metals and Semiconductors. Physics Procedia, 83, 1339–1346. https://doi.org/10.1016/j.phpro.2016.08.141 ( reposiTUm)

Otto, A., & Ebert, R. (2015). Simulationsgestützte Analyse des Übergangs zwischen Laser-strahlschweißen und -abtragsschneiden. Journal of the University of Applied Sciences Mittweida, 4, 56–59. http://hdl.handle.net/20.500.12708/152107 ( reposiTUm)

Tsai, Y.-C., Leitz, K.-H., Fardel, R., Otto, A., Schmidt, M., & Arnold, C. B. (2012). Parallel optical trap assisted nanopatterning on rough surfaces. Nanotechnology, 23(16), Article 165304. https://doi.org/10.1088/0957-4484/23/16/165304 ( reposiTUm)

Leitz, K.-H., Koch, H., Otto, A., & Schmidt, M. (2012). Numerical simulation of process dynamics during laser beam drilling with short pulses. Applied Physics A: Materials Science and Processing, 106(4), 885–891. https://doi.org/10.1007/s00339-011-6702-8 ( reposiTUm)

Leitz, K.-H., Redlingshöfer, B., Reg, Y., Otto, A., & Schmidt, M. (2011). Metal Ablation with Short and Ultrashort Laser Pulses. Physics Procedia, 12, 230–238. https://doi.org/10.1016/j.phpro.2011.03.128 ( reposiTUm)

Bammer, F., Schumi, T., Otto, A., & Schuöcker, D. (2011). Laser Assisted Bedning for Efficient Light-Weight-Production. Tehnicki Vjesnik-Technical Gazette, 18(ISSN: 1330-3651), 571–576. http://hdl.handle.net/20.500.12708/163604 ( reposiTUm)

Otto, A., & Koch, H. (2011). Numerical Simulation - A Versatile Approach for Better Understanding Dynamics in Laser Material Processing. Physics Procedia, PART 2(ISSN: 1875-3892), 11–20. http://hdl.handle.net/20.500.12708/162840 ( reposiTUm)

Zenz, C., Durán, C., Florian, T., Bielak, R., & Otto, A. (2024). Multiphysical simulation of hot cracking in Laser-Based Powder Bed Fusion. In Procedia CIRP (pp. 341–346). Elsevier. https://doi.org/10.1016/j.procir.2024.08.130 ( reposiTUm)

Florian, T., Buttazzoni, M., Zenz, C., & Otto, A. (2024). Ultra-short pulse laser ablation of metals: A comprehensive 3D simulation perspective enlightening novel process insights. In C. Arnold, M. Schmidt, & K. Wudy (Eds.), 13th CIRP Conference on Photonic Technologies [LANE 2024], 15-19 September 2024, Fürth, Germany (pp. 602–607). Elsevier B.V. https://doi.org/10.1016/j.procir.2024.08.183 ( reposiTUm)

Fürbacher, R., Liedl, G., & Otto, A. (2022). Fast transition from hydrophilic to superhydrophobic, icephobic properties of stainless steel samples after femtosecond laser processing and exposure to hydrocarbons. In 12th CIRP Conference on Photonic Technologies [LANE 2022] (pp. 643–647). Elsevier. https://doi.org/10.34726/3381 ( reposiTUm)

Drobniak, P., Otto, A., Vázquez, R. G., Arias, R. M., & Arias, J. L. (2020). Simulation of keyhole laser welding of stainless steel plates with a gap. In M. Schmidt, F. Vollertsen, & E. Govekar (Eds.), Procedia CIRP (pp. 731–736). Elsevier. https://doi.org/10.1016/j.procir.2020.09.134 ( reposiTUm)

Bielak, R., Murzin, S. P., Liedl, G., & Otto, A. (2020). Modelling of temperature fields in DP1000 steel during laser treatment using diffractive optical elements. In Journal of Physics: Conference Series (p. 012016). IOP. https://doi.org/10.1088/1742-6596/1745/1/012016 ( reposiTUm)

Meunier, M., Otto, A., Gómez Vázquez, R., Arias, J., Fernández, R., Pallier, G., Jian, P., Pinel, O., & Labroille, G. (2019). Freeform Beam Shaping with Multi-Plane Light Conversion for 1.07µm Ultra-High Throughput Laser-Based Material Macroprocessing. In Proceedings of ICALEO 2019 (p. 8). http://hdl.handle.net/20.500.12708/68104 ( reposiTUm)

Otto, A., Vázquez, R. G., Hartel, U., & Mosbah, S. (2018). Numerical analysis of process dynamics in laser welding of Al and Cu. In Procedia CIRP (pp. 691–695). Procedia CIRP /. https://doi.org/10.1016/j.procir.2018.08.040 ( reposiTUm)

Otto, A., & Vázquez, R. G. (2018). Fluid dynamical simulation of high speed micro welding. In Journal of Laser Applications (p. 032411). Journal of Laser Applications. https://doi.org/10.2351/1.5040652 ( reposiTUm)

Gómez Vázquez, R., Otto, A., & Peternel, J. (2017). Recent Advances in the Multiphysical Simulation of Laser Assisted Manufacturing Processes. In Proceedings of the LiM 2017 (p. 12). http://hdl.handle.net/20.500.12708/67763 ( reposiTUm)

Murzin, S. P., Kazanskiy, N. L., Liedl, G., Otto, A., & Bielak, R. (2017). Laser beam shaping for modification of materials with ferritic-martensitic structure. In Procedia Engineering (pp. 164–168). Elsevier. https://doi.org/10.1016/j.proeng.2017.09.592 ( reposiTUm)

Gómez Vázquez, R., Otto, A., Liedl, G., Feichtenschlager, R., & Stiglbrunner, C. (2016). Simulation of laser welding aluminum-to-steel. In Mathematical Modelling of Weld Phenomena 11 (pp. 99–108). Verlag der Technischen Universität Graz. http://hdl.handle.net/20.500.12708/67260 ( reposiTUm)

Gómez Vázquez, R., Otto, A., Liedl, G., & Feichtenschlager, R. (2015). Simulation of Laser Welding of Dissimilar Metals. In Lasers in Manufacturing 2015 (p. 8). http://hdl.handle.net/20.500.12708/67224 ( reposiTUm)

Tatra, S., Otto, A., & Gómez Vázquez, R. (2015). Computational Study on the Effect of the Pulse Length on Laser Ablation Processes. In Lasers in Manufacturing 2015 (p. 8). http://hdl.handle.net/20.500.12708/67225 ( reposiTUm)

Otto, A., Koch, H., & Gómez Vázquez, R. (2014). Multiphysical Simulation of ns-Laser Ablation of Multi-material LED-structures. In Physics Procedia (pp. 1315–1324). Physics Procedia / Elsevier. https://doi.org/10.1016/j.phpro.2014.08.057 ( reposiTUm)

Koch, H., Gómez Vázquez, R., & Otto, A. (2014). Analysis of Distortion Effects on Weld Pool Dynamics in Laser Beam Welding. In Proceedings of the IWOTE 2014: International Workshop on Thermal Forming and Welding Distortion (pp. 165–172). Strahltechnik / BIAS Verlag. http://hdl.handle.net/20.500.12708/67226 ( reposiTUm)

Vázquez, R. G., Koch, H. M., & Otto, A. (2014). Multi-physical Simulation of Laser Welding. In Physics Procedia (pp. 1334–1342). Physics Procedia / Elsevier. https://doi.org/10.1016/j.phpro.2014.08.059 ( reposiTUm)

Liedl, G., Koch, H., & Otto, A. (2013). Fügen mit Laserstrahlung. In N. Enzinger (Ed.), Fügetechnik in Österreich (pp. 36–40). Schweiss- und Prüftechnik. http://hdl.handle.net/20.500.12708/66765 ( reposiTUm)

Koch, H., Gómez Vázquez, R., & Otto, A. (2012). A multiphysical simulation model for laser based manufacturing. In Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (p. 14). TU Wien. http://hdl.handle.net/20.500.12708/67228 ( reposiTUm)

Leitz, K.-H., Koch, H., & Otto, A. (2012). Numerical Simulation of Drilling with Pulsed Beams. In Physics Procedia (p. 9). Elsevier. http://hdl.handle.net/20.500.12708/66670 ( reposiTUm)

Koch, H., Gómez Vázquez, R., & Otto, A. (2012). Multiphysical Simulation of Laser Material Processing. In A. Otto (Ed.), Physics Procedia (pp. 843–852). Elsevier. https://doi.org/10.1016/j.phpro.2012.10.109 ( reposiTUm)

Bammer, F., Schumi, T., Otto, A., & Schuöcker, D. (2011). Laser Assisted Bending For Efficient Light-Weight-Production. In MOTSP 2011 (pp. 375–380). University of Zagreb. http://hdl.handle.net/20.500.12708/66458 ( reposiTUm)

Duran Oscuez, C. G., Zenz, C., Florian, T., Buttazzoni, M., & Otto, A. (2025, September 22). Institute of Production Engineering and Photonic Technologies [Conference Presentation]. The 14th International Seminar “Numerical Analysis of Weldability,” Graz, Austria. http://hdl.handle.net/20.500.12708/225034 ( reposiTUm)

Florian, T., Otto, A., Schricker, K., Bergmann, J. P., & Zenz, C. (2025, February 18). A Hybrid Approach Using Synchrotron X-Ray Imaging and Multiphysics Simulation: Unveiling Pore Formation Dynamics in Laser Welding [Conference Presentation]. 2nd International Workshop on Use fo Large Science Facilities in Metal Research (ULSFMR 2025), Auckland, New Zealand. ( reposiTUm)

Florian, T., Buttazzoni, M., Zenz, C., & Otto, A. (2025, June 23). Critical Insights: Advanced Simulations Unveiling Ablation Mechanisms in USP Laser Processing [Conference Presentation]. Lasers in Manufacturing Conference (LiM 2025), München, Germany. ( reposiTUm)

Florian, T., Schricker, K., Zenz, C., Buttazzoni, M., Duran Oscuez, C. G., & Otto, A. (2025, June 12). Simulating the Unseen: Unveiling Defect Mechanisms in Laser Beam Welding [Conference Presentation]. The 9th International Congress on Laser Advanced Materials Processing, Ise-City, Japan. ( reposiTUm)

Florian, T., Klöpfer, R., Buttazzoni, M., Zenz, C., & Otto, A. (2025, June 10). From Pulse to Crater: Simulating Material Response and Crater Formation in Ultra Short Pulse Laser Ablation [Conference Presentation]. The 9th International Congress on Laser Advanced Materials Processing (LAMP2025), Ise, Japan. ( reposiTUm)

Otto, A., Buttazzoni, M., & Florian, T. (2024, June 6). Shedding light on ultra-fast processes: Multiphysical simulation of laser micro-processing [Conference Presentation]. Stuttgart Laser Technology Forum, Stuttgart, Germany. ( reposiTUm)

Otto, A., Buttazzoni, M., & Florian, T. (2024, November 5). Advanced Continuum Mechanics Simulation of Ultra-Short Pulse Laser Processing: Unraveling Ablation Mechanisms [Conference Presentation]. ICALEO 2024, Hollywood, California, United States of America (the). ( reposiTUm)

Otto, A., Buttazzoni, M., Duran Oscuez, C. G., Florian, T., & Zenz, C. (2024, April 16). Multiphysikalische Simulation lasergestützter additiver Fertigungsprozesse - Prozesse durch Simulationen verstehen und verbessern [Conference Presentation]. Anwenderforum Additive Produktionstechnologie, Stuttgart, Germany. http://hdl.handle.net/20.500.12708/198018 ( reposiTUm)

Otto, A., Florian, T., Zenz, C., & Buttazzoni, M. (2023, June 27). Optimization of static and dynamic beam shapes for laser beam welding by means of numerical process simulations [Conference Presentation]. Lasers in Manufacturing - LiM 2023, München, Germany. ( reposiTUm)

Otto, A., Florian, T., & Zenz, C. (2023, October 18). Exploiting the Potentials of Laser Beam Shaping for Welding Applications via Numerical Simulations [Conference Presentation]. International Congress on Applications of Lasers & Electro-Optics (ICAELO 2023), Chicago, United States of America (the). ( reposiTUm)

Zenz, C., Otto, A., Buttazzoni, M., Bielak, R., Durán Oscuez, C. G., & Mosbah, S. (2023, July 27). Residual Stress Modelling in Laser-Based Powder Bed Fusion using a Fluid Mechanical Analogy Model [Conference Presentation]. Sim-AM 2023, Munich, Germany. http://hdl.handle.net/20.500.12708/187922 ( reposiTUm)

Zenz, C., Buttazzoni, M., & Otto, A. (2022, August 30). CUSTODIAN technical webinar: How to solve PBF-LB/M challenges in industry: Simulation [Presentation]. CUSTODIAN technical webinar: How to solve PBF-LB/M challenges in industry, Unknown. http://hdl.handle.net/20.500.12708/165241 ( reposiTUm)

Zenz, C., Buttazzoni, M., & Otto, A. (2022, August 30). CUSTODIAN technical webinar: How to improve the flexibility, robustness and productivity of the LBW (Laser Beam welding) process: Simulation [Presentation]. CUSTODIAN technical webinar: How to improve the flexibility, robustness and productivity of the LBW (Laser Beam welding) process, Unknown. http://hdl.handle.net/20.500.12708/165240 ( reposiTUm)

Otto, A. (2022, May 16). Werkzeug Licht [Conference Presentation]. Tag des Lichts, Wien, Germany. ( reposiTUm)

Otto, A., Buttazzoni, M., & Zenz, C. (2022, June 21). Numerical Simulation of  Laser Powder Bed Fusion [Conference Presentation]. Stuttgarter Lasertage 2022, Stuttgart, Germany. http://hdl.handle.net/20.500.12708/175741 ( reposiTUm)

Zenz, C., Buttazzoni, M., & Otto, A. (2022, September 23). Multi-Scale Simulation of Laser-Based Powder Bed Fusion Using a Continuum Mechanics Approach : From Meltpool Scale Towards Part Scale [Conference Presentation]. 9th GACM Colloquium on Computational Mechanics, Essen, Germany. http://hdl.handle.net/20.500.12708/175743 ( reposiTUm)

Otto, A., & Gómez Vázquez, R. (2019). Fluid dynamical defect mechanisms in laser beam welding. LPM2019 - The 20th International Symposium on Laser Precision Microfabrication, International Conference Center Hiroshima, Japan. http://hdl.handle.net/20.500.12708/95263 ( reposiTUm)

Otto, A., & Gómez Vázquez, R. (2019). Modelling and Simulation of Laser Material Processes - Potentials of Numerical Simulations for Understanding, Planning and Optimizing Laser Welding Processes. LASER World of PHOTONICS 2019 - Application Panel “Lasers Materials Processing - Modelling and Simulation of Laser Material Processes,” Munich, Germany. http://hdl.handle.net/20.500.12708/95264 ( reposiTUm)

Otto, A., & Gómez Vázquez, R. (2019). Multiphysical Approach for the Simulation of Powder-based Laser Additive Manufacturing Processes. OSA Laser Congress 2019, Vienna, Austria. http://hdl.handle.net/20.500.12708/95312 ( reposiTUm)

Otto, A. (2018). Process Simulations for Optimizing and Planning Laser Material Processing. Photonics 4 Industrial Production, Marriott Courtyard, Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/95262 ( reposiTUm)

Gómez Vázquez, R., & Otto, A. (2017). Improving Laser Manufacturing Processes B y Means of Multiphysics Simulations. International Symposium for Production Research, Vienna, Austria. http://hdl.handle.net/20.500.12708/94798 ( reposiTUm)

Lin, Z., Kleinert, J., Tatra, S., Gómez Vázquez, R., Bielak, R., & Otto, A. (2017). 3D Numerical Modeling of Short Pulsed Laser Micromachining Applications. ICALEO 2017, Atlanta, United States of America (the). http://hdl.handle.net/20.500.12708/94792 ( reposiTUm)

Wohltan, A., Ionce, M., Neuwirth, N., Widauer, P., Pils, E., Schreiber, I., Gómez Vázquez, R., Stiglbrunner, C., & Otto, A. (2016). Optimisation of Data Compression of OpenFOAM Simulations Utilising a Newly Developed Approach. 12th International Conference on Numerical Methods in Industrial Forming Processes NUMIFORM 2016, Troyes, France. http://hdl.handle.net/20.500.12708/94588 ( reposiTUm)

Gómez Vázquez, R., Otto, A., Liedl, G., Feichtenschlager, R., Stiglbrunner, C., & Tatra, S. (2016). Simulation of the Dissimilar Joining Process of Aluminum and Steel by Laser Assisted Wetting. 12th International Conference on Numerical Methods in Industrial Forming Processes NUMIFORM 2016, Troyes, France. http://hdl.handle.net/20.500.12708/94587 ( reposiTUm)

Otto, A., & Koch, H. (2011). Numerical Simulation - A Versatile Approach for Better Understanding Dynamics in Laser Material Processing. 6th International WLT Conference on Lasers in Manufacturing, München, Germany. http://hdl.handle.net/20.500.12708/93246 ( reposiTUm)

Koch, H., Kägler, C., Otto, A., & Schmidt, M. (2011). Analysis of Welding Zinc Coated Steel Sheets in Zero Gap Gonfiguration by 3D Simulations and High Speed Imaging. IV International WLT Conference on Lasers in Manufacturing, München, Germany. http://hdl.handle.net/20.500.12708/93193 ( reposiTUm)

Leitz, K.-H., Redlingshöfer, B., Reg, Y., & Otto, A. (2011). Metal Ablation with Short and Ultrashort Laser Pulses. 6th International WLT Conference on Lasers in Manufacturing, München, Germany. http://hdl.handle.net/20.500.12708/93192 ( reposiTUm)