SHAHZAD, N. Approximation and Leray-Schauder type results for ${\mathcal U}_{c}^{\kappa}$ maps. Topological Methods in Nonlinear Analysis, [S. l.], v. 24, n. 2, p. 337–346, 2004. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2004.031. Acesso em: 22 jul. 2024.