Team, Support. “Remarks on P-D Operator: Dhananjay Gopal, Erdal Karapinar”. Thai Journal of Mathematics 15, no. 2 (August 1, 2017): 421–428. Accessed December 22, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/691.