By Witzell Jesper   Karlman Margareta   in Scandinavian Journal of Forest Research

ISSN:0282-7581|15|2|202-209

Taylor & Francis Ltd‎(2000)‎

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By Wulff Sören   Hansson Per   Witzell Jesper   in Canadian Journal of Forest Research

ISSN:1208-6037|36|10|2605-2613

NRC Research Press‎(2006)‎

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