@book{36727,
	author = {Mazur, David R. and ebrary, Inc.},
	title = {Combinatorics},
	publisher = {Mathematical Association of America,},
	year = {c2010.},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10733079}
}