HILTON, P. On some contributions of Karol Borsuk to homotopy theory. Topological Methods in Nonlinear Analysis, [S. l.], v. 1, n. 1, p. 9–14, 1993. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1993.003. Acesso em: 30 mar. 2023.