@book{52257,
	author = {Hammer, G (Ed.) and Symposium on Operations Research (8th: 1983: University of Karlaruho, West Germany) and Pallaschke, D (Ed.)},
	title = {Selected topics in operations research and mathematical economics},
	publisher = {Spinger-Verlag},
	year = {1984},
	address = {New York}
}