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Published Online: Oct 27, 2017
Page range: 76 - 80
DOI: https://doi.org/10.1515/sg-2004-0014
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© 2017
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Andersson, Bengt
The Forestry Research Institute of Sweden (Skogforsk), Box 3, SE-918 21Sävar, Sweden
Fedorkov, A.
Russian Academy of Sciences, Komi Scientific Centre, Institute of Biology, Kommun. st. 28,Syktyvkar, Russian Federation