POPA, V. Weakly Picard pairs of multifunctions. CUBO, A Mathematical Journal, [S. l.], v. 12, n. 1, p. 59–66, 2010. DOI: 10.4067/S0719-06462010000100006. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1426. Acesso em: 29 mar. 2024.