Ravi, O., I. Rajasekaran, A. Pandi, and S. Murugesan. “On Contra $\pi g\gamma$-Continuous Functions”. Journal of Informatics and Mathematical Sciences 6, no. 2 (December 31, 2014): 109–121. Accessed April 28, 2024. https://www.rgnpublications.com/journals/index.php/jims/article/view/258.