Author(s):
1. Mitar Jocanović, Fakultet tehničkih nauka Univerziteta u Novom Sadu, Serbia
2. Velibor Karanović, Faculty of Technical Science, Kosovska Mitrovica, Serbia
3. Darko Knežević, Faculty of Mechanical Engineering, Republic of Srpska, Bosnia and Herzegovina
4. Marko Orošnjak, Fakultet tehničkih nauka Univerziteta u Novom Sadu, Serbia

Final paper