1. Department in Kragujevac, Academy of Professional Studies Sumadija, Kosovska 8, 34000 Kragujevac, Serbia
2. Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia
3. Faculty of Polytechnics, University of Donja Gorica, Donja Gorica, 81000 Podgorica, Montenegro
4. Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia