Author(s):
1. Jelana Račić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Aleksandra Šinik, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Tatjana Botić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
4. Slavica Grbić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina

Final paper