DINH, N. V.; CHI, T. K. Fundamental resonance in one generalized system of type Van der Pol. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 18, n. 3, p. 8–18, 1996. DOI: 10.15625/0866-7136/10100. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/10100. Acesso em: 20 apr. 2024.