Author(s):
1. Rajko Radovanović, Russian Federation
2. Oskar Bera, Serbia
3. Mirjana Jovičić, Univerzitet u Novom Sadu, Tehnološki fakultet, Novi Sad, Serbia
4. Jelena Pavličević, Serbia
5. Branka Pilić, Serbia
6. Nevena Vukic, University of Novi Sad, Faculty of Technology, Serbia, Serbia
7. Radmila Radicevic, University of Novi Sad, Faculty of Technology, Serbia, Serbia