@article {616,
	title = {{\"U}bersicht {\"u}ber die bekannten Gattungen der Anonaceen und Beschreibung einiger neuen Gattungen dieser Familie aus dem tropischen Afrika},
	journal = {Notizblatt des K{\"o}nigl. botanischen Gartens und Museums zu Berlin},
	volume = {3},
	number = {23},
	year = {1990},
	pages = {45-59},
	author = {Engler, A. and Diels, L.}
}
@article {615,
	title = {Studies in Annonaceae. XIV. Index to generic names of Annonaceae.},
	journal = {Taxon},
	volume = {39},
	year = {1990},
	pages = {675-690},
	author = {van Setten, A.K. and Maas, P.J.M.}
}
@article {613,
	title = {Fruits and seeds in Annonaceae},
	journal = {Annonaceae Newsletter},
	volume = {8},
	year = {1990},
	pages = {29-34},
	author = {van Setten, A.K.}
}
@article {284,
	title = {Evolution of reproductive structures and functions in primitive angiosperms (Magnoliidae)},
	journal = {Memoires of the New York Botanical Garden},
	volume = {55},
	year = {1990},
	pages = {5-34},
	author = {Endress, P.K.}
}
