WITTENBURG, J. Stationary values of the transmission ratio of the planar fourbar. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 30, n. 4, p. 359 – 365, 2008. DOI: 10.15625/0866-7136/30/4/5641. Disponível em: https://vjmech.vast.vn/vjmech/article/view/5641. Acesso em: 8 nov. 2025.