AFUWAPE, A. U. . Pendulum-Like Systems Of A Certain Class Of Nonlinear Differential Equations - A Review∗. Journal of the Nigerian Mathematical Society, [S. l.], v. 33, n. 1-3, p. 25–40, 2021. Disponível em: https://ojs.ictp.it/jnms/index.php/jnms/article/view/706. Acesso em: 29 mar. 2024.