Tsvyatkov, Petar, Emil Yankov, Lyubomir Lazov, Edmunds Teirumnieks, and Karlis Pīgožnis. “INVESTIGATION OF SURFACE ROUGHNESS OF CARBON STEEL MACHINED PARTS AFTER NANOSECOND FIBER LASER MARKING”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (January 16, 2024): 358–362. Accessed May 18, 2024. https://journals.ru.lv/index.php/ETR/article/view/7317.