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M. D.  Pirie, Chatrou, L. W., Erkens, R. H. J., Maas, J. W., Van der Niet, T., Mols, J., and Richardson, J. E., ?Phylogeny reconstruction and molecular dating in four Neotropical genera of Annonaceae: the effect of taxon sampling in age estimation?, in Plant species-level systematics: new perspectives on pattern and process, F. T.  Bakker, Chatrou, L. W., Gravendeel, B., and Pelser, P. B., Eds. Ruggell: Gantner Verlag, 2005, pp. 149-174.

M. D.  Pirie, Chatrou, L. W., Mols, J. B., Erkens, R. H. J., and Oosterhof, J., ?'Andean-centred' genera in the short-branch clade of Annonaceae: testing biogeographical hypotheses using phylogeny reconstruction and molecular dating?, Journal of BiogeographyJournal of Biogeography, vol. 33, pp. 31-46, 2006.

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M. D.  Pirie, Kankainen, S., and Maas, P. J. M., ?Revision and phylogeny of Cremastosperma (Annonaceae)?, in Cremastosperma (and other evolutionary digressions). Molecular, phylogenetic, biogeographic, and taxonomic studies in Neotropical Annonaceae, M. D.  Pirie, Ed. Utrecht: PhD-thesis, Utrecht University, 2005, pp. 87-188.