1. Başkent University, Engineering Faculty, Bağlıca Campus, Ankara 06810, Turkey
2. Department of Mathematics, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
3. Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
4. Department of Computer Science, Faculty of Engineering and Computer Sciences, National University of Modern Languages, H-9, Islamabad, Pakistan