1. National University of Computer and Emerging Sciences, Lahore Campus, Pakistan
2. School of Mathematical Sciences, Zhejiang Normal University, Jinhua, Zhejiang, China
3. Department of Mathematics, University of Management and Technology, Sialkot Campus, Lahore, Pakistan
4. Mathematical Science Department, Faculty of Science, Princess Nourah bint Abdulrahman University, Riyadh 11546, Saudi Arabia