ANH, Nguyen Dong. Short Communication: A technique for investigating nonlinear vibrations. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 34, n. 2, p. 135–138, 2012. DOI: 10.15625/0866-7136/34/2/928. Disponível em: https://vjmech.vast.vn/vjmech/article/view/928. Acesso em: 8 nov. 2025.