Author(s):
1. Marijana Kapovic Solomun, Faculty of Forestry, University of Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Mihajlo Markovic, Republic of Srpska, Bosnia and Herzegovina
3. Svjetlana Coralic, Republic of Srpska, Bosnia and Herzegovina
4. Milan Šipka, Republic of Srpska, Bosnia and Herzegovina
5. Mladen Babić, Republic of Srpska, Bosnia and Herzegovina