K, Raghavendra, and Basavaraj M. Ittanagi. “On R#-Closed and R#-Open Maps in Topological Spaces”. International Journal of Engineering and Technology 7, no. 4.10 (October 2, 2018): 770–772. Accessed April 28, 2025. https://sciencepubco.com/index.php/IJET/article/view/26113.