@inproceedings{KEOD-2009-ElstT,
	author        = "Stefan van der Elst and Michel J. L. van Tooren",
	booktitle     = "{Proceedings of the First International Conference on Knowledge Engineering and Ontology Development}",
	isbn          = "978-989-674-012-2",
	pages         = "261--268",
	publisher     = "{INSTICC Press}",
	title         = "{Ontology Development for Model-driven Design in Knowledge based Engineering}",
	year          = 2009,
}