PHUC, Nguyen Thien. New concepts of theory of gearing and a method for reverse synthesis of the gearing. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 33, n. 3, p. 194–202, 2011. DOI: 10.15625/0866-7136/33/3/212. Disponível em: https://vjes.vast.vn/vjmech/article/view/212. Acesso em: 12 jan. 2026.