1. School of Mathematics and Statistics Nanjing University of Information Science and Technology Nanjing 210044 China
2. Niğde Ömer Halisdemir University Mechanical Engineering Department Niğde 51240 Turkey
3. Department of Basic Sciences College of Science and Theoretical Studies Saudi Electronic University Riyadh 11673 Kingdom of Saudi Arabia
4. Department of Statistics Quaid‐i‐Azam University 45320 Islamabad 44000 Pakistan