IDZIK, Adam; KULPA, Władysław; MAĆKOWIAK, Piotr. Equivalent forms of the Brouwer fixed point theorem II. Topological Methods in Nonlinear Analysis, [S. l.], v. 57, n. 1, p. 57–71, 2021. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2020.036. Acesso em: 4 jul. 2025.