DA, H. V.; SY, N. T. Frequency entrainment in a self-oscillatory system under parametric excitation. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 25, n. 3, p. 137–144, 2003. DOI: 10.15625/0866-7136/25/3/6586. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/6586. Acesso em: 20 apr. 2024.