[1]
P. K. Rana, “A STUDY OF THE GROUP OF COVERING TRANSFORMATION THROUGH FUNCTORS”, Mat. Bilt., vol. 33, no. 1, pp. 21–24, Jan. 2009, Accessed: Aug. 14, 2026. [Online]. Available: https://bilten.smm.org.mk/index.php/bilten/article/view/1748