Weak Separation Axioms via $e$-I- sets in Ideal Topological Spaces. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 8, n. 4, p. 502–513, 2015. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/2488. Acesso em: 27 dec. 2024.