Authors
T. Persson
The Forestry Research Institute of Sweden (Skogforsk), P.O. Box 3, SE-918 21, Sävar, Sweden
B. Andersson
The Forestry Research Institute of Sweden (Skogforsk), P.O. Box 3, SE-918 21, Sävar, Sweden
© 2017 T. Persson, B. Andersson, published by Johann Heinrich von Thünen Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.