1. Department of Mathematics, Capital University of Science and Technology, Islamabad, Pakistan
2. Department of Mathematics, University of Punjab, Jhelum, Pakistan
3. Department of Mathematical Sciences, Fatima Jinnah Women University, Rawalpindi, Rawalpindi, Pakistan
4. Department of Information Systems, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia