@book{16228,
	author = {Summer School on 'Optimization and Operations Research', Univ. of Bonn, Sept. 14-22, 1979 and Korte, Bernhard},
	title = {Modern applied mathematics, optimization and operations research; collection of state of the art surveys based on the lectures presented at the summer school /},
	publisher = {North-Holland,},
	year = {1982},
	address = {Amsterdam:}
}