Cvetanov, Genadi, and Tsanko Karadzhov. “GEOMETRIC SYNTHESIS OF INVOLUTE PLANETARY GEARS WITH CONNECTED GEAR WHEELS OF TYPE 2K-H”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 16, 2021): 49–53. Accessed April 25, 2024. https://journals.ru.lv/index.php/ETR/article/view/6643.