Kaldashev, Tsvetan. “DEVELOPMENT OF A PARAMETRIC PROGRAM FOR PROCESSING A HYPERBOLIC SURFACE ON A LATHE MACHINE”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 20, 2019): 70–73. Accessed April 6, 2025. https://journals23.rta.lv/index.php/ETR/article/view/4037.