1. Public Enterprise “Šume Republike Srpske”a.d. Sokolac, Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Faculty of Forestry, Belgrade
3. University of Banja Luka, Faculty of Forestry, Banja Luka, Republic of Srpska, Bosnia and Herzegovina
4. Public Enterprise “Šume Republike Srpske” a.d. Sokolac, Banja Luka, Republic of Srpska, Bosnia and Herzegovina
5. Institute of Forestry, Belgrade