@book{3731,
	author = {Gordon, Hugh, and ebrary, Inc.},
	title = {Discrete probability},
	publisher = {Springer,},
	year = {c1997.},
	series = {Undergraduate texts in mathematics},
	address = {New York :},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10005868}
}