ISLAM, M. Z.; ALAM, M. S.; HOSSAIN, M. B. A unified Krylov-Bogoliubov-Mitropolskii method for solving hyperbolic-type nonlinear partial differential systems. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 30, n. 1, p. 11–19, 2008. DOI: 10.15625/0866-7136/30/1/5607. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/5607. Acesso em: 29 mar. 2024.