1. School of Mathematics and Physics, Anhui Jianzhu University, Hefei, China
2. Department of Mathematics, Riphah International University, Faisalabad Campus, Pakistan
3. Department of Mathematics, University of Management and Technology, Sialkot, Pakistan
4. Department of Mathematics and Statistics, University of Agriculture, Faisalabad, Pakistan
5. Department of Mechanical Engineering, College of Engineering, Qassim University, Unaizah, Saudi Arabia