CARPINTERO, C.; RAJESH, N.; ROSAS, E. OPERATION VIA-REGULAR OPEN SETS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 31, p. 227–238, 2013. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6137. Acesso em: 26 jul. 2026.