A Review on Optimum Profile Modification of Spur Gear. International Journal of Current Engineering and Technology, [S. l.], v. 1, n. 7.Special Issue, p. 88–91, 2017. Disponível em: https://ijcet.evegenis.org/index.php/ijcet/article/view/4423. Acesso em: 4 may. 2026.