M. Raja, N. Seenivasagan, and O. Ravi. “New Type of Generalized Closed Sets in Topological Spaces”. International Journal of Mathematics And its Applications 6, no. 2 - B (June 15, 2018): 67–74. Accessed July 22, 2024. https://ijmaa.in/index.php/ijmaa/article/view/702.