1. Department of Mathematics Quaid‐i‐Azam University 45320 Islamabad Pakistan
2. Department of Mathematics Wenzhou University Wenzhou Zhejiang Province P. R. China
3. Department of Mechanical Engineering 62000 Munzur University Tunceli Turkey
4. Department of Anatomy School of Dentistry SZABMU Islamabad Pakistan
5. Mathematics Department Faculty of Sciences Northern Border University Arar Saudi Arabia
6. Department of mechanical engineering Faculty of engineering Jazan University Jazan kingdom of Saudia Arabia