@book{64374,
	author = {Hélein, Frédéric, and ebrary, Inc.},
	title = {Harmonic maps, conservation laws, and moving frames},
	publisher = {Cambridge University Press,},
	year = {2002.},
	series = {Cambridge tracts in mathematics ;},
	address = {Cambridge ;},
	edition = {2nd ed.},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10019069}
}