@inbook {3437,
	title = {Tribe Exaceae},
	booktitle = {Gentianaceae: systematics and natural history},
	year = {2002},
	month = {2002///},
	pages = {66 - 108},
	publisher = {Cambridge University Press},
	organization = {Cambridge University Press},
	address = {Cambridge},
	author = {Klackenberg, J.},
	editor = {Struwe, L. and Albert, V.}
}
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	title = {Cotylanthera transferred to Exacum (Gentianaceae)},
	journal = {Bot. Jahrb. Syst.},
	volume = {126},
	year = {2006},
	month = {2006///},
	pages = {477 - 481},
	author = {Klackenberg, J.}
}
@article {3219,
	title = {Monophyly and relationships of the tribe Exaceae (Gentianaceae) inferred from nuclear ribosomal and chloroplast DNA sequences},
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	volume = {28},
	year = {2003},
	month = {2003///},
	pages = {500 - 517},
	author = {Yuan, Y.-M. and Wohlhauser, S. and M{\"o}ller, M. and Chassot, P. and Mansion, G. and Grant, J. and K{\"u}pfer, P. and Klackenberg, J.}
}
@article {3176,
	title = {The genus Exacum (Gentianaceae)},
	journal = {Opera Bot.},
	volume = {84},
	year = {1985},
	month = {1985///},
	pages = {1 - 144},
	author = {Klackenberg, J.}
}
