1. Adomne Ltd., Designing and Engineering, Novi Sad, Antona Čehova 1, 21000 Novi Sad, Serbia
2. University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
3. Anadolu University, Faculty of Business Administration, Eskişehir, Turkey