1. Department of Mathematics, Benha Faculty of Engineering, Benha University, Benha, Egypt
2. Department of Mathematics, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
3. Department of Mathematics, King Abdulaziz University, Jeddah, Saudi Arabia
4. Department of Mathematics and Statistics, University of South Florida, Tampa, FL 33620, USA
5. College of Mathematics and Systems Science, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
6. Department of Mathematical Sciences, International Institute for Symmetry Analysis and Mathematical Modelling, North-West University, Mafikeng Campus, Mmabatho 2735, South Africa