Author(s):
1. Vid Jovišević, Faculty of Mechanical Engineering, Republic of Srpska, Bosnia and Herzegovina
2. Stevo Borojevic, Faculty of Mechanical Engineering, Republic of Srpska, Bosnia and Herzegovina
3. Gordana Lakić Globočki, University of Banja Luka, Faculty of mechanical engineering, Republic of Srpska, Bosnia and Herzegovina
4. Đorđe Čiča, Faculty of Mechanical Engineering, Republic of Srpska, Bosnia and Herzegovina
5. Branislav Sredanović, University of Banja Luka, Faculty of mechanical engineering, Republic of Srpska, Bosnia and Herzegovina