NOIRI, Takashi; POPA, Valeriu. A note on modifications of \(rg\)-closed sets in topological spaces. CUBO, A Mathematical Journal, [S. l.], v. 15, n. 2, p. 65–69, 2013. DOI: 10.4067/S0719-06462013000200006. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1310. Acesso em: 13 oct. 2025.