SEIFERT, G. Functional Differential Equations: An Introduction. CUBO, A Mathematical Journal, [S. l.], v. 4, n. 1, p. 279–292, 2002. Disponível em: https://www.perspectivasdelacomunicacion.cl/ojs/index.php/cubo/article/view/1734. Acesso em: 20 may. 2024.