Author(s):
1. Biljana Milovanović, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
2. Zoran Petrović, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
3. Pero Dugić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
4. Krsto Mijanović, Agromediteranski fakultet Univerziteta „DŽemal Bijedić“ Mostar, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina

Abstract