This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Janusz Gołąb
University of Agriculture in Krakow, Faculty of Forestry, Department of Forest Engineering, al. 29-listopada 46, 31-425Kraków, Poland
Krzysztof Urban
University of Agriculture in Krakow, The Experimental Forestry Unit in Krynica-Zdrój, Ludowa 10, 33-380Krynica-Zdrój, Poland
Elżbieta Badach
University of Agriculture in Krakow, Faculty of Agriculture and Economics, Department of Statistics and Econometrics, al. Mickiewicza 21, 31-120Kraków, Poland