1. Department of Mathematics, Capital University of Science and Technology (CUST), Islamabad, Pakistan
2. Department of Mathematics, Faculty of Science, New Valley University, Al-Kharga, Al-Wadi Al-Gadid, Egypt
3. Department of Mathematics, Faculty of Science, Northern Border University, Arar, Saudi Arabia
4. Department of Applied Mathematics and Statistics, Institute of Space Technology Islamabad, Islamabad, Pakistan
5. College of Civil Engineering, National University of Sciences and Technology (NUST) Campus Risalpur, Risalpur, Pakistan