@book{213090,
	author = {Klingenberg, Wilhelm, and ebrary, Inc.},
	title = {Riemannian geometry},
	publisher = {W. de Gruyter,},
	year = {1995.},
	address = {Berlin ;},
	edition = {2nd rev. ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10597530}
}