1. School of Mathematical Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
2. Mathematics Department, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah, Saudi Arabia
3. Mathematics Department, Khurmah University College, Taif University, Saudi Arabia
4. Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Astana, Kazakhstan