Institution: | 1. Department of Mathematics, Quaid-i-Azam University, Islamabad 44000, Pakistan;
2. Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
3. Department of Mathematics, Faculty of Computing, Mohammad Ali Jinnah University, Islamabad 44000, Pakistan;
4. Department of Mathematics, COMSATS Institute of Information Technology, Sahiwal 57000, Pakistan |