Lazov, Lyubomir, Hristina Deneva, and Erika Teirumnieka. “INFLUENCE OF DEFOCUS POSITION ON LASER CUTTING PROCESS IN SHEET STEEL”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 15, 2017): 159–162. Accessed November 21, 2024. https://journals23.rta.lv/index.php/ETR/article/view/2658.