1. School of Management and Economics, Jiangsu University of Science and Technology, Zhenjiang, China
2. Department of Mathematics, Faculty of Science, Jiangsu University, Zhenjiang, China
3. CONACyT-Tecnològico Nacional de Mèxico/CENIDET, Cuernavaca, Morelos, Mexico
4. Department of Basic Science, Obour High Institute for Engineering and Technology, Cairo, Egypt