TINH, Nguyen Duc. Higher order stochastic averaging method for mechanical systems having two degrees of freedom. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 26, n. 2, p. 103–110, 2004. DOI: 10.15625/0866-7136/26/2/5694. Disponível em: https://vjmech.vast.vn/vjmech/article/view/5694. Acesso em: 8 nov. 2025.