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Pautasso M, Chiarucci A.Pautasso M, et al. Among authors: chiarucci a.Ann Bot. 2008 Apr;101(5):709-15. doi: 10.1093/aob/mcn010. Epub 2008 Feb 4.Ann Bot. 2008.PMID: 18250107Free PMC article.
Chiarucci A, Bacaro G, Scheiner SM.Chiarucci A, et al.Philos Trans R Soc Lond B Biol Sci. 2011 Aug 27;366(1576):2426-37. doi: 10.1098/rstb.2011.0065.Philos Trans R Soc Lond B Biol Sci. 2011.PMID: 21768157Free PMC article.Review.