Author(s):
1. Sonja Djilas, Univerzitet u Novom Sadu, Tehnološki fakultet, Novi Sad, Serbia
2. Vesna Tumbas Šaponjac, University of Novi Sad, Faculty of Technology, Serbia, Serbia
3. Jasna Čanadanović-Brunet, University of Novi Sad, Faculty of Technology, Serbia, Serbia
4. Gordana Ćetković, University of Novi Sad, Faculty of Technology, Serbia, Serbia
5. Jelena Vulić, University of Novi Sad, Faculty of Technology, Serbia, Serbia

Abstract