NGUYEN, Hong Thai; NGUYEN, Thanh Trung. Pitch Line Synthesis of Noncircular Planetary Gears. Old Journal, [S. l.], n. 140, p. 5–10, 2020. Disponível em: https://jst.vn/index.php/old/article/view/558. Acesso em: 2 aug. 2025.