@book{64414,
	author = {Braga, Anthony Allan},
	title = {Police innovation  contrasting perspectives},
	publisher = {Cambridge University Press},
	year = {2006},
	series = {Cambridge Studies in Criminology},
	address = {Cambridge (Inglaterra)},
	url = {http://www.loc.gov/catdir/enhancements/fy0665/2006297067-t.html}
}