FENILLE, M. C. Strong surjections from two-complexes with trivial top-cohomology onto nonorientable surfaces. Topological Methods in Nonlinear Analysis, [S. l.], p. 1–7, 2024. DOI: 10.12775/TMNA.2024.011. Disponível em: https://apcz.umk.pl/TMNA/article/view/55341. Acesso em: 4 dec. 2024.