Hillier, Frederick S. Introduction to operations research / Frederick S. Hillier, Gerald J. Lieberman - 5th ed. - New York : McGraw-Hill, 1990 - xviii, 954 p. : ill. ; 24 cm. Includes bibliographical references and indexes ISBN: 0071007458 hadiah LCCN: 89-013525 Subjects--Topical Terms: Operations research