Autori:
1. Dragana Kešelj, Republic of Srpska, Bosnia and Herzegovina
2. Dragica Lazić, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
3. Zoran Petrović, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
4. Jelena Penavin-Škundrić, Prirodno-matematički fakultet Banja Luka, Republic of Srpska, Bosnia and Herzegovina
5. Gordana Ostojic, Republic of Srpska, Bosnia and Herzegovina

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