Author(s):
1. Dragan Vujadinović, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
2. Svetlana Pelemiš, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
3. Milan Vukić, Republic of Srpska, Bosnia and Herzegovina
4. Vesna Gojković Cvjetković, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina