@book{32374,
	author = {Manning, Christopher D. and Raghavan, Prabhakar.},
	title = {Introduction to information retrieval /},
	publisher = {Cambridge University Press,},
	year = {2008.},
	address = {New York :},
	url = {http://www.loc.gov/catdir/enhancements/fy0810/2008001257-b.html}
}