@inproceedings{KEOD-2009-Kop,
	author        = "Christian Kop",
	booktitle     = "{Proceedings of the First International Conference on Knowledge Engineering and Ontology Development}",
	isbn          = "978-989-674-012-2",
	pages         = "404--407",
	publisher     = "{INSTICC Press}",
	title         = "{What are Main Concepts in an OWL Domain Ontology?}",
	year          = 2009,
}