INVESTIGATION OF THE INFLUENCE OF THE NUMBER OF REPETITIONS ON THE PROCESS OF LASER MARKING OF HS6-5-2-5 STEEL. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 3, p. 163–167, 2021. DOI: 10.17770/etr2021vol3.6567. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4506.. Acesso em: 11 mar. 2026.