1. Department of Mathematics, DCC-KFUPM, Dhahran, Saudi Arabia
2. NUTECH School of Applied Sciences and Humanities, National University of Technology, Islamabad, Pakistan
3. Department of Mathematics, Quaid-I-Azam University, Islamabad Pakistan + Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics, Faculty of Science King Abdulaziz University, Jeddah, Saudi Arabia