1. Department of Mathematics, University of Management and Technology Lahore, Lahore, Pakistan
2. School of Electronics and Information, Yangtze University, Jingzhou, China
3. IT4Innovations, VSB – Technical University of Ostrava, Ostrava-Poruba, Czech Republic
4. Department of Computer Science and Mathematics, Lebanese American University, Byblos, Lebanon
5. Institute for Groundwater Studies (IGS), University of the Free State, Bloemfontein, South Africa