IBRAHIM, H. Z. . $$\delta^{*}$$-open sets and relation between some weak and strong forms of $$\delta^{*}$$-open sets in topological spaces. Journal of Advanced Studies in Topology, [S. l.], v. 6, n. 1, p. 20–27, 2022. Disponível em: https://m-sciences.com/index.php/jast/article/view/169. Acesso em: 27 mar. 2023.