Author(s):
1. Zdravko Pandur, Faculty of Forestry, Zagreb, Croatia
2. Marijan Šušnjar, Faculty of Forestry, Zagreb, Croatia
3. Marin Bačić, Faculty of Forestry, Zagreb, Croatia
4. Kruno Lepoglavec , Faculty of Forestry, Zagreb, Croatia
5. Hrvoje Nevečerel, Faculty of Forestry, Zagreb, Croatia