Nguyen, Thai. “Shaping the Tooth Profile of Elliptical Gear With the Involute Ellipse Curve”. VNUHCM Journal of Engineering and Technology 4, no. 3 (August 30, 2021): 1048-1056. Accessed April 7, 2026. https://et.vnuhcmjournal.com.vn/index.php/et/article/view/820.