@book{23558,
	author = {Riggs, James L. and Inoue, Michael Shigeru,},
	title = {Introduction to operations research and management science :},
	publisher = {McGraw-Hill,},
	year = {1975.},
	series = {McGraw-Hill series in industrial engineering and management science},
	address = {New York :},
	note = {Includes index.}
}