@book{31245,
	author = {Hillier, Frederick S. and Lieberman, Gerald.},
	title = {Introducción a la Investigación de operaciones /},
	publisher = {Mcgraw-Hill,},
	year = {1997.},
	address = {Mexico :},
	edition = {4a ed.},
	note = {Apendice \ indice de autor \ indice analitico \ Introduction to  operations research.}
}