DINH, N. V. On the dephase angle in a variational system of the equilibrium regime. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 16, n. 1, p. 29–35, 1994. DOI: 10.15625/0866-7136/10152. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/10152. Acesso em: 26 apr. 2024.