1. Department of Economics, Kansas State University, Kansas USA
2. Department of Mathematics, Islamic Azad University, Ardabil, Iran
3. CENTRUM Católica Graduate Business School, Lima, Peru. Pontificia Universidad Católica del Perú, Lima, Peru
4. Department of Computer Engineering, Faculty of Engineering & Natural Sciences, Bandırma Onyedi Eylül University, Balikesir, Turkey
5. Department of Mathematics, Kansas State University, Manhattan, Kansas USA
6. Department of Computer Science, College of Science and Technology, University of Human Development, Sulaymaniyah, Kurdistan Region, Iraq