1. Department of Mathematics, Shanghai University, No. 99 Shangda Road, Shanghai 200444, P. R. China
2. Newtouch Center for Mathematics of Shanghai University, Shanghai 200444, P. R. China
3. Department of Computer Engineering, Biruni University, Istanbul, 34010, Turkey
4. Department of Computer Science and Mathematics, Lebanese American University, Beirut, Lebanon
5. Department of Mathematics, University of Engineering and Technology, Pakistan
6. School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
7. Department of Mechanical Engineering, Wrocław University of Science and Technology, Wrocław, Poland