@book{rijsbergen79informationretrieval,
	title = {Information Retrieval},
	address = {London},
	author = {C. J. van Rijsbergen},
	edition = {2},
	publisher = {Butterworths},
	url = {http://www.dcs.gla.ac.uk/Keith/Preface.html},
	year = {1979},
	biburl = {http://www.bibsonomy.org/bibtex/200c94cf42a12180b494e31e6d725b52d/sb3000},
	keywords = {ir seminal }
}