RAVI, O.; CHANDRASEKAR, S.; GANESAN, S. ON WEAKLY πg-CLOSED SETS IN TOPOLOGICAL SPACES. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 36, p. 651–666, 2014. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6550. Acesso em: 27 aug. 2026.