1. Department of Mathematics, Institute of Arts and Sciences, Government College University Faisalabad, Faisalabad, Pakistan
2. Department of Mathematical Sciences, (FBAS) BUITEMS, Quetta, Pakistan
3. Department of Mathematics and Statistics, Riphah International University, Islamabad, Pakistan
4. Department of Mechanics and Engineering Sciences, Peking University, Beijing, People’s Republic of China
5. Department of Mechanical Engineering, Lebanese American University, Beirut, Lebanon
6. Department of Mathematics, Riphah International University, Islamabad, Pakistan