1. Department of Public Safety, Government of Brčko District of Bosnia and Herzegovina, Bulevara Mira 1, 76100 Brčko, Bosnia and Herzegovina
2. The College of Tourism, Academy of Applied Studies Belgrade, Bulevar Zorana Ðindića 152a, 11070 Belgrade, Serbia
3. Institute of Agricultural Economics, Volgina 15, 11060 Belgrade, Serbia
4. Military Academy, University of Defence in Belgrade, Veljka Lukica Kurjaka 33, 11000 Belgrade, Serbia
5. Decision Science & Operations Management Area, Calcutta Business School, Diamond Harbour Road, Bishnupur 743503, India