@book{159523,
	author = {Render, Barry and Heizer, Jay H.},
	title = {Principles of operations management},
	publisher = {Prentice Hall},
	year = {c1997.},
	series = {Prentice Hall series in decision sciences},
	address = {Upper Saddle River, N.J.},
	edition = {2nd ed.}
}