@book{702,
	author = {Hillier, Frederick S. and Lieberman, Gerald J.},
	title = {Introduction to operations research /},
	publisher = {McGraw-Hill Higher Education,},
	year = {2005.},
	address = {Boston:},
	edition = {8th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0702/2004050470-d.html}
}