1. Department of Mathematics and Statistics, Hazara University, Mansehra, Pakistan
2. Department of Mathematics, Quaid-e-Azam University, Islamabad, Pakistan
3. Department of Mathematics, Faculty of Sciences, University of Jeddah, Jeddah, Saudi Arabia
4. Mechanical engineering department, College of Engineering, Northern Border University, Arar, Saudi Arabia
5. Department of Mathematics, College of Science and Humanities in Al-Aflaj, Prince Sattam Bin Abdulaziz University, Al-Aflaj, Saudi Arabia
6. Department of Mathematics, Faculty of Science, Damietta University, New Damietta, Damietta, Egypt