Author(s):
1. Branislava Jeftić, Univeristy of Belgrade, Faculty of Mechanical Engineering, 2. Igor Hut, Serbia
3. Ivana Stanković (Mileusnić), Mašinski fakultet Univerziteta u Beogradu, 4. Jovana Šakota-Rosić, Mašinski fakultet Univerziteta u Beogradu, Serbia
5. Lidija Matija, Mašinski fakultet Univerziteta u Beogradu, Serbia
6. Djuro Koruga, Serbia

Abstract