Lengerov, Angel, Sabi Sabev, and Stoyan Paliiski. “EXPERIMENTAL STUDY OF SURFACE ROUGHNESS IN VIBRO-IMPACT CUTTING OF OPTICAL SLUGS”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (January 16, 2024): 145–148. Accessed April 6, 2025. https://journals23.rta.lv/index.php/ETR/article/view/7241.