@book{37229,
	author = {Alsina, Claudi. and Nelsen, Roger B. and ebrary, Inc.},
	title = {Icons of mathematics},
	publisher = {Mathematical Association of America,},
	year = {c2011.},
	address = {[Washington, D.C.] :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10728529}
}