Technical University in Zvolen, Faculty of Forestry, T. G. Masaryka 24, SK – 960 53 Zvolen, Slovak Republic
Czech University of Life Sciences Prague, Faculty of Forestry and Wood Sciences, Kamýcká 1176, CZ – 165 21 Praha 6 – Suchdol, Czech Republic
National Forest Centre - Institute for Forest Consulting and Education Zvolen, Sokolská 2, SK – 960 52 Zvolen, Slovak Republic