@book{36720,
	author = {Marcus, Daniel A., and ebrary, Inc.},
	title = {Combinatorics},
	publisher = {Mathematical Association of America,},
	year = {c1998.},
	series = {Classroom resource materials},
	address = {Washington, D.C. :},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10733072}
}