Author(s):
1. Svetlana Pelemiš, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
2. Dragoljub Mirjanić, Akademija nauka i umjetnosti Republike Srpske, Republic of Srpska, Bosnia and Herzegovina
3. Miladin Gligorić, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina