@book{24177,
	author = {Hillier, Frederick S. and Lieberman, Gerald J.},
	title = {Introduction to operations research /},
	publisher = {McGraw-Hill },
	year = {c2005.},
	address = {Boston, MA. },
	edition = {8a ed.},
	note = {Folio del Cd Rom : 1478},
	url = {http://www.loc.gov/catdir/enhancements/fy0702/2004050470-d.html}
}