BENEVIERI, P.; FURI, M. On the concept of orientability for Fredholm maps between real Banach manifolds. Topological Methods in Nonlinear Analysis, [S. l.], v. 16, n. 2, p. 279–306, 2000. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2000.042. Acesso em: 22 jul. 2024.