ELSKEN, T. A nonstandard description of retarded functional differential equations. Topological Methods in Nonlinear Analysis, [S. l.], v. 19, n. 1, p. 153–198, 2002. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2002.009. Acesso em: 22 jul. 2024.