HUNG, L. X. Approximate analysis of some two-degree-of-freedom nonlinear random systems by an extension of Gaussian equivalent linearization. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 23, n. 2, p. 95–109, 2001. DOI: 10.15625/0866-7136/9943. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/9943. Acesso em: 3 may. 2024.