@book{9337,
	author = {Geary, Robert Charles, and Spencer, John E.},
	title = {Elements of linear programming :},
	publisher = {Griffin,},
	year = {1973.},
	series = {Griffins' statistical monographs and courses, no. 15},
	address = {London :},
	edition = {2nd ed.,},
	note = {Includes index.}
}