Author(s):
1. Srđan Preradović, Faculty of Natural Sciences and Mathematics, University of Tuzla , Republic of Srpska, Bosnia and Herzegovina
2. Dino Hasanagić, Faculty of Natural Sciences and Mathematics, University of Tuzla , Republic of Srpska, Bosnia and Herzegovina
3. Vesna Antić, Univerzitet u Beogradu, Poljoprivredni fakultet, Serbia
4. Milica Balaban, Prirodno-matematički fakultet Banja Luka, Republic of Srpska, Bosnia and Herzegovina

Applied paper from author