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Milbau A, Graae BJ, Shevtsova A, Nijs I.Milbau A, et al. Among authors: nijs i.Ann Bot. 2009 Aug;104(2):287-96. doi: 10.1093/aob/mcp117. Epub 2009 May 13.Ann Bot. 2009.PMID: 19443459Free PMC article.