Author(s):
1. Dušan Ješić, International technology Management Academy, Novi Sad, 2. Pavel Kovač, Faculty of Technical Sciences, Department for Production Engineering, Serbia
3. Dragana Rodić, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Departman za fiziku, Serbia
4. Borislav Savković, Faculty of Technical Sciences, Department for Production Engineering, Serbia
5. Dražen Sarjanović, Sara-Mont. Doo,, Serbia

Abstract