Author(s):
1. Ivan Ristić, Univerzitet u Novom Sadu, Tehnološki fakultet, Novi Sad, Serbia
2. Vladan Mićić, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
3. Jelena Tanasić, Univerzitet u Novom Sadu, Tehnološki fakultet, Novi Sad, Serbia
4. Marija Kostić, Univerzitet u Novom Sadu, Tehnološki fakultet, Novi Sad, Serbia
5. Svetlana Pelemiš, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina