1. Department of Mathematics, Nonlinear Analysis Group (NAG), Virtual University of Pakistan, 54-Lawrence Road, Lahore, Pakistan
2. Department of Mathematics, University of Management and Technology, 54770 Lahore, Pakistan
3. IT4Innovations, VSB - Technical University of Ostrava, Ostrava, Czech Republic
4. Department of Computer Science and Mathematics, Lebanese American University, Byblos, Lebanon
5. Department of Mathematics, Pabna Unversity of science and Technology, Pabna-6600, Bangladesh