PETER, I. R.; PINTEA, C. Necessary conditions for finite critical sets. Maps with infinite critical sets. Topological Methods in Nonlinear Analysis, [S. l.], v. 47, n. 2, p. 739–749, 2016. DOI: 10.12775/TMNA.2016.032. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2016.032. Acesso em: 3 jul. 2024.