DA, Hoang Van; SY, Nguyen Thac. Frequency entrainment in a self-oscillatory system under parametric excitation. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 25, n. 3, p. 137–144, 2003. DOI: 10.15625/0866-7136/25/3/6586. Disponível em: https://vjmech.vast.vn/vjmech/article/view/6586. Acesso em: 8 nov. 2025.