@book{36701,
	author = {Ore, �ystein, and ebrary, Inc.},
	title = {Graphs and their uses},
	publisher = {Mathematical Association of America,},
	year = {1990.},
	series = {Anneli Lax New Mathematical Library ;},
	address = {Washington, DC :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10729363}
}