1. Department of Mathematics, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
2. Department of Mathematics, COMSATS University Islamabad, Sahiwal, Pakistan
3. Department of Mathematics and Statistics, Riphah International University I-14, Islamabad, Pakistan
4. Mathematical Modelling and Applied Computation Research Group (MMAC), Department of Mathematics, King Abdulaziz University, Jeddah, Saudi Arabia