ROSAS, E.; CARPINTERO, C.; MORENO, J. Upper and lower nearly (I, J)-continuous multifunctions. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 42, p. 756–765, 2019. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7192. Acesso em: 27 oct. 2026.