Autori:
1. Nemanja Jungic, Republic of Srpska, Bosnia and Herzegovina
2. Marijana Kapovic Solomun, Faculty of Forestry, University of Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Mihajlo Markovic, Republic of Srpska, Bosnia and Herzegovina
4. Svjetlana Coralic, Republic of Srpska, Bosnia and Herzegovina