Author(s):
1. Jasna Radulovic, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
2. Milorad Bojic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
3. Vesna Ranković, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
4. Danijela Nikolic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
5. Ljubiša Bojić, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
6. Jasmina Skerlic, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia

Final paper