1. School of Mathematical Sciences, Dalian University of Technology, Dalian, China
2. School of Mathematics and Statistics, Central South University Changsha, Hunan, China
3. Department of Mathematics and Statistics, Hazara University, Mansehra, Pakistan
4. Higher Education Department, AJ&K, Pakistan
5. Department of Statistics and Operations Research, Faculty of Science, King Saud University, Riyadh, Saudi Arabia