DINH, Nguyen Van. A note on the method of harmonic balance. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 23, n. 1, p. 34–38, 2001. DOI: 10.15625/0866-7136/9938. Disponível em: https://vjmech.vast.vn/vjmech/article/view/9938. Acesso em: 9 nov. 2025.