Lazov, Lyubomir, Hristina Deneva, and Pavels Narica. “Factors Influencing the Color Laser Marking”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2015): 102–107. Accessed May 3, 2024. https://journals.rta.lv/index.php/ETR/article/view/223.