@book{84848,
	author = {V�olker, Johanna.},
	title = {Learning expressive ontologies /},
	publisher = {AKA :},
	year = {2009.},
	series = {Studies on the Semantic Web,},
	address = {Heidelberg, Germany :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10827948}
}