1. Department of Mathematics, University of Management and Technology, Lahore, Pakistan
2. Department of Mathematics, Huzhou University, Huzhou, China + Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering, Changsha University of Science and Technology, Changsha, China
3. Department of Mathematics, Cankaya University, Balgat, Ankara, Turkey + Institute of Space Sciences, Magurele-Bucharest, Romania + Department of Medical Research, China Medical University, Taichung, Taiwan