@book{36711,
	author = {Sinkov, Abraham, and Feil, Todd, and ebrary, Inc.},
	title = {Elementary cryptanalysis},
	publisher = {Mathematical Association of America ;},
	year = {c2009.},
	address = {[Washington, D.C.] :},
	edition = {2nd ed. /},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10729373}
}