@book{17563,
	author = {Helmstetter, J. and Micali, Artibano. and ebrary, Inc.},
	title = {Quadratic mappings and Clifford algebras},
	publisher = {Birkh�auser,},
	year = {c2008.},
	address = {Basel ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10284361}
}