Author(s):
1. Slobodan Bunić, UPS, Fakultet za ekologiju, Republic of Srpska, Bosnia and Herzegovina
2. Milorad Maksimović, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Borislav Malinović, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
4. Melenta Lakić, TEM INŽENJERING, d.o.o. Banja Luka, Republic of Srpska, Bosnia and Herzegovina