Ibrahim, H. Z. . (2022) “$$\delta^{*}$$-open sets and relation between some weak and strong forms of $$\delta^{*}$$-open sets in topological spaces”, Journal of Advanced Studies in Topology, 6(1), pp. 20–27. Available at: http://www.m-sciences.com/index.php/jast/article/view/169 (Accessed: 5 October 2022).