VON HAESELER, F.; PEITGEN, H.-O.; SKORDEV, G. Lefschetz fixed point theorem for acyclic maps with multiplicity. Topological Methods in Nonlinear Analysis, [S. l.], v. 19, n. 2, p. 339–374, 2002. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2002.018. Acesso em: 22 jul. 2024.