O. RAVI, V. J. R. . BETWEEN ?-CLOSED SETS AND g?-CLOSED SETS. Mathematical Statistician and Engineering Applications, [S. l.], v. 71, n. 2, p. 702–710, 2022. DOI: 10.17762/msea.v71i2.2551. Disponível em: https://www.philstat.org/index.php/MSEA/article/view/2551. Acesso em: 21 may. 2024.