CHADHA, A.; PANDEY, D. N. Periodic BVP for a class of nonlinear differential equation with a deviated argument and integrable impulses. CUBO, A Mathematical Journal, [S. l.], v. 17, n. 1, p. 11–27, 2015. DOI: 10.4067/S0719-06462015000100002. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1148. Acesso em: 3 may. 2024.