B. Shanmugapriya, K. Ramesh, and S. Chitra. “$IF\alpha^{**}g$ Closed Sets in Intuitionistic Fuzzy Topological Spaces”. International Journal of Mathematics And its Applications 6, no. 1 - A (January 1, 2018): 63–71. Accessed May 17, 2024. http://ijmaa.in/index.php/ijmaa/article/view/898.