1. School of Mathematics and Information Science, Henan Polytechnic University, Jiaozuo, China
2. Centre for Advanced Studies in Pure and Applied Mathematics, Bahauddin Zakariya University, Multan, Pakistan
3. Department of Mathematics, Institute of Southern Punjab, Multan, Pakistan
4. Department of Mathematics, University of Management and Technology, Lahore, Pakistan
5. Centre for Advanced Studies in Pure and Applied Mathematics, Bahauddin Zakariya University, Multan, Pakistan + School of Mathematical Sciences, University of Science and Technology of China, Hefei, Anhui, China
6. Department of Mathematics, Science Faculty, Firat University, Elazig, Turkey + Department of Medical Research, China Medical University, Taichung, Taiwan