EILENBERG, S. Karol Borsuk - personal reminiscences. Topological Methods in Nonlinear Analysis, [S. l.], v. 1, n. 1, p. 1–2, 1993. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1993.001. Acesso em: 25 apr. 2024.