1. School of Mathematics and Statistics, Henan University of Science and Technology, Luoyang 471023, P. R. China
2. Guizhou Key Laboratory of Economics System Simulation, Guizhou University of Finance and Economics, Guiyang 550025, P. R. China
3. Institute of Mathematics, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
4. Mathematics Research Center, Department of Mathematics, Near East University, Near East Boulevard PC: 99138 Nicosia, Mersin 10 - Turkey
5. Department of Computer Science and Mathematics, Lebanese American University, Beirut, Lebanon
6. Department of Mathematics, Art and Science Faculty, Siirt University, 56100 Siirt, Turkey
7. School of Mathematics and Statistics, Art and Science Faculty, Guizhou University of Finance and Economics, Guiyang 550025, P. R. China