DAO, N. V. Connected oscillations in a nonlinearly coupled system. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 25, n. 3, p. 129–136, 2003. DOI: 10.15625/0866-7136/25/3/6585. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/6585. Acesso em: 7 may. 2024.