@book{60469,
	author = {Nemhauser, George, and Wolsey, Laurence,},
	title = {Integer and combinatorial optimization /},
	publisher = {John Wiley & Sons, Inc.,},
	year = {1999.},
	series = {Wiley-Interscience Series in Discrete Mathematics and Optimization},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10925515}
}