@book{84850,
	author = {Kr�otzsch, Markus.},
	title = {Description logic rules /},
	publisher = {AKA :},
	year = {2010.},
	series = {Studies on the Semantic Web,},
	address = {Heidelberg, Germany :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10827950}
}