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

Final paper