1. Government of Brčko District of Bosnia and Herzegovina, Department of Public Safety, Bulevara Mira 1, 76100 Brčko, Bosnia and Herzegovina
2. Faculty of Business Economics and Entrepreneurship, Economics, Finance and Banking, Mitropolita Petra 8, 11000 Belgrade, Serbia
3. Military Academy, University of Defence in Belgrade, Veljka Lukica Kurjaka 33, 11000 Belgrade, Serbia
4. Institute of Agricultural Economics, Volgina 15, 11060 Belgrade, Serbia
5. Statistics & Operations Research Department, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia