Wali, R.S. “Fuzzy Pgprw-Closed Sets and Fuzzy Pgprw-Open Sets in Fuzzy Topological Spaces”. Journal of Global Research in Mathematical Archives(JGRMA) 3, no. 3 (September 10, 2017): 01–11. Accessed January 12, 2026. https://www.jgrma.com/index.php/jgrma/article/view/314.