Author(s):
1. Ladislav Vasilišin , Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Nataša Lakić-Karalić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Slavica Grujić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
4. Milica Čolović, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
5. Danica Savanović, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina

Final paper Paper for reviews Abstract