@book{158802,
	author = {Gaukroger, Stephen. and ebrary, Inc.},
	title = {Descartes' system of natural philosophy},
	publisher = {Cambridge University Press,},
	year = {2002.},
	address = {Cambridge, UK ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10064288}
}