INGARDEN, R. S. Juliusz Schauder - personal reminiscences. Topological Methods in Nonlinear Analysis, [S. l.], v. 2, n. 1, p. 1–14, 1993. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1993.026. Acesso em: 22 jul. 2024.