1. Assistant Professor, Faculty of Technical Sciences, Univ. of Novi Sad, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia (corresponding author).
2. Full Professor, Faculty of Technical Sciences, Univ. of Novi Sad, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia.
3. Ph.D. Student, Faculty of Technical Sciences, Univ. of Novi Sad, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia.