KAZALI, B. K. A New Closed Set on Ideal Topological Spaces. Journal of Advanced Studies in Topology, [S. l.], v. 4, n. 1, p. 18:21, 2012. DOI: 10.20454/jast.2013.460. Disponível em: http://www.m-sciences.com/index.php/jast/article/view/460. Acesso em: 28 feb. 2021.