@inproceedings{KR-2002-Schulz,
	author        = "Stefan Schulz",
	booktitle     = "{Proceedings of the Eighth International Conference on Principles of Knowledge Representation and Reasoning}",
	isbn          = "1-55860-554-1",
	pages         = "387--394",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Necessary Parts and Wholes in Bio-Ontologies}",
	year          = 2002,
}