1 | Department of Mathematics, Quaid-I-Azam University, Islamabad, Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics, King Abdulaziz University, Jeddah, Saudi Arabia |
2 | Department of Mathematics, Quaid-I-Azam University, Islamabad |
3 | Department of Mathematics, Quaid-I-Azam University, Islamabad, Pakistan |
4 | Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics,
King Abdulaziz University, Jeddah |