Somasundaram, S, and B. Uma Devi. “Minimal M-GS Open And Maximal M-GS Closed Sets In Minimal Space”. Asian Journal of Current Engineering and Maths 3, no. 5 (September 28, 2014): 52–54. Accessed May 12, 2024. http://innovativejournal.in/index.php/ajcem/article/view/1214.