$F-$open and $F-$closed sets in Topological Spaces. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 16, n. 2, p. 819–832, 2023. DOI: 10.29020/nybg.ejpam.v16i2.4583. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4583.. Acesso em: 24 apr. 2024.