ŻOŁĄDEK, H. The topological proof of Abel-Ruffini theorem. Topological Methods in Nonlinear Analysis, [S. l.], v. 16, n. 2, p. 253–265, 2000. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2000.040. Acesso em: 22 jul. 2024.