University of Karlsruhe (8th:1983: West Germany) & Hammer,G and Pallaschke,D. (1984). Selected topics in operations research and mathematical economics: Proceedings of the 8th symposium on operations research held at the University of Karlsruhe, West Germany, August 22-25,1983. Springer - Verlag.

University of Karlsruhe (8th:1983: West Germany) và Hammer,G and Pallaschke,D. Selected Topics in Operations Research and Mathematical Economics: Proceedings of the 8th Symposium on Operations Research Held at the University of Karlsruhe, West Germany, August 22-25,1983. Berlin: Springer - Verlag, 1984.

University of Karlsruhe (8th:1983: West Germany) và Hammer,G and Pallaschke,D. Selected Topics in Operations Research and Mathematical Economics: Proceedings of the 8th Symposium on Operations Research Held at the University of Karlsruhe, West Germany, August 22-25,1983. Springer - Verlag, 1984.