@book{210405,
	author = {International Colloquium on Differential Geometry and Alvarez L�opez, Jes�us A. and ebrary, Inc.},
	title = {Differential geometry},
	publisher = {World Scientific,},
	year = {c2009.},
	address = {Hackensack, NJ :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10361661}
}