Levicharov, Georgi, Angel Lengerov, and Stoyan Paliiski. “STUDY ABOUT THE INFLUENCE OF THE PROCESS PARAMETERS OF VIBRO IMPACT CUTTING OF OPTICAL SLUGS ON THE PRODUCTIVITY OF THE PROCESS”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (January 16, 2024): 164–167. Accessed December 22, 2024. https://journals.rta.lv/index.php/ETR/article/view/7248.