Аутори:
1. Dragica Vilotic, University of Belgrade-Faculty of Forestry, , Serbia
2. Marina Nonić, Шумарски факултет Београд, Serbia
3. Mirjana Šijačić-Nikolić, Шумарски факултет Београд, Serbia
4. Dragan Gacic, University of Belgrade-Faculty of Forestry, , Serbia