Operational research '81 : proceedings of the ninth IFORS International Conference on Operational Research, Hamburg, Germany, July 20-24, 1981 = Actes de la neuvieme IFORS Confιrence internationale de recherche operationnelle, Hamburg, Germany, juillet 20-24, 1981 - International Conference of Operational Research 1981 : Hamburg, Germany); Brans, J.P.; International Federation of Operation Research Societies (Amsterdam, North-Holland Pub. Co., 1981)
Includes bibliographical references and index
Keywords: Operations research