@book{51555,
	author = {Steffens, Timo},
	title = {Enhancing similarity measures with imperfect rule-based background knowledge /},
	publisher = {Akademische Verlagsgesellschaft Aka,},
	year = {c2006},
	series = {DISKI ;},
	address = {Berlin :},
	url = {http://www.loc.gov/catdir/toc/fy0714/2007276397.html}
}