MEDINA, Rigoberto. Asymptotic behavior of the solution of a nonlinear differential equation. CUBO, A Mathematical Journal, [S. l.], n. 6, p. 01–12, 1990. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1833. Acesso em: 12 oct. 2025.