PINTO, M. Nonlinear Impulsive Differential Systems. CUBO, A Mathematical Journal, [S. l.], v. 2, n. 1, p. 294–301, 2000. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1776. Acesso em: 20 may. 2024.