1. School of Electronic Information and Automation, Aba Teachers University, Wenchuan 623002, P. R. China
2. School of Applied Mathematics, University Electronic Science and Technology of China, Chengdu 610054, P. R. China
3. Department of Mathematics, Huzhou University, Huzhou, Zhejiang 313000, P. R. China
4. CONACyT-Tecnológico Nacional de México/CENIDET, Interior Internado Palmira S/N, Col. Palmira, C.P. 62490 Cuernavaca, Morelos, Mexico
5. Consejo Académico, Universidad Virtual CNCI, Monterrey, México
6. Department of Mathematics and Statistics, Hazara University Mansehra, KKH Dhodiyal, Mansehra 21120, Khyber Pakhtunkhwa, Pakistan
7. Future Technology Research Center, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan, R. O. C.
8. Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, Canada R3T 5V6, Canada
9. Department of Information Technology, Faculty of Computing and Information Technology, King Abdulaziz University, Jeddah, Saudi Arabia