@book{158091,
	author = {Symposium Aristotelicum and Crubellier, Michel, and ebrary, Inc.},
	title = {Aristotle's Metaphysics Beta},
	publisher = {Oxford University Press,},
	year = {2009.},
	address = {Oxford :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10329660}
}