@book{13483,
	author = {Bachem, A. and Bonn Workshop on Combinatorial Optimization (1980)},
	title = {Bonn Workshop on Combinatorial Optimization /},
	publisher = {North-Holland Pub. Co. ;},
	year = {1982.},
	address = {Amsterdam ;},
	note = {"Based on lectures presented at the IV. Bonn Workshop on Combinatorial Optimazation, August 28-30, 1980."}
}