@book{52,
	author = {Taha, Hamdy A.},
	title = {Operations Research : an introduction },
	publisher = {Prentice Hall International Paperback Editions,},
	year = {2009.},
	address = {[S.l.] :},
	edition = {4th ed.},
	url = {http://10.10.170.122:8080/browse/book/18262}
}