Lazov, Lyubomir, Pēteris Čeirs, and Imants Adijans. “ON THE POSSIBILITY OF MARKING EGGS WITH A CO2 LASER”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 16, 2021): 168–172. Accessed November 21, 2024. https://journals.rta.lv/index.php/ETR/article/view/6625.