CALDAS, M.; HATIR, E.; JAFARI, S.; NOIRI, T. A New Kupka Type Continuity, λ-Compactness and Multifunctions. CUBO, A Mathematical Journal, [S. l.], v. 11, n. 4, p. 1–13, 2009. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1449. Acesso em: 16 may. 2024.