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	volume = {58},
	year = {1994},
	pages = {73-191},
	chapter = {73},
	author = {J.J. Vermeulen}
}
@article {vermeulen1999biodiversity,
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	year = {1999},
	publisher = {Citeseer},
	author = {Vermeulen, J. and Whitten, T.}
}
