Author(s):
1. Zoran Petrović, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
2. Pero Dugić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Vojislav Aleksić, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
4. Mirko Petković, Rafinerija ulja Modriča, Republic of Srpska, Bosnia and Herzegovina
5. Gordana Ostojic, Republic of Srpska, Bosnia and Herzegovina

Abstract