@book{6941,
	author = {Berger, Marcel, and Gostiaux, Bernard.},
	title = {Differential geometry :},
	publisher = {Springer-Verlag,},
	year = {c1988.},
	series = {Graduate texts in mathematics ;},
	address = {New York :},
	note = {Translation of: Géométrie différentielle.},
	url = {http://www.loc.gov/catdir/enhancements/fy0814/87027507-d.html}
}