@book{10968,
	author = {Leibniz, Gottfried Wilhelm, and Cohen, Claudine. and ebrary, Inc.},
	title = {Protogaea},
	publisher = {University of Chicago Press,},
	year = {2008.},
	address = {Chicago :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10266002}
}