@book{151607,
	author = {Preyer, Gerhard. and ebrary, Inc.},
	title = {Philosophy of mathematics},
	publisher = {Ontos Verlag,},
	year = {2008.},
	series = {Logos : Studien zur Logik, Sprachphilosophie und Metaphysik ;},
	address = {Frankfurt :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10728857}
}