Author(s):
1. Marko Miletic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
2. Saša Jovanović, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
3. Zorica Djordjevic, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
4. Ivan Miletic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
5. Milorad Bojic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia