Kaldashev, Tsvetan, and Petar Hadjiiski. “STUDY OF ERROR ESTABLISHMENT IN MILLING MACHINES WITH 5 AXES”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 20, 2019): 81–83. Accessed May 2, 2024. https://journals.rta.lv/index.php/ETR/article/view/4187.