1. Department of Mathematics and Statistics, The University of Lahore, Lahore, Pakistan
2. Faculty of Engineering Modern Techmologies, Amol University of Special Modern Technologies, Amol, Iran
3. School of Foundation Studies and Mathematics, OUC with Liverpool John Moores University (UK), Qatar Campus, 12253 Doha, Qatar
4. Department of Humanities & Basic Science, Military College of Signals, NUST, Islamabad, Pakistan
5. Department of Computer Science and Mathematics, Lebanese American University, Byblos, Lebanon
6. Department of Mathematics, University of Narowal, Narowal, Pakistan