On Some Forms of Closed Sets and Related Topics. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 16, n. 1, p. 336–362, 2023. DOI: 10.29020/nybg.ejpam.v16i1.4582. Disponível em: https://ejpam.com/index.php/ejpam/article/view/4582.. Acesso em: 3 jul. 2024.