@book{rijsbergen79ir,
	title = {Information Retrieval},
	author = {C. J. van Rijsbergen},
	publisher = {London: Butterworths},
	url = {http://www.dcs.gla.ac.uk/Keith/Preface.html},
	year = {1979},
	biburl = {http://www.bibsonomy.org/bibtex/200c94cf42a12180b494e31e6d725b52d/msn},
	language = {english},
	keywords = {cites.gradu info.refs.books research.ir state.printed }
}