@book{9785,
	author = {Summer School in Combinatorial Optimization, SOGESTA, Italy, May 30-June 11, 1977 and Christofides, Nicos ; ed.},
	title = {Combinatorial optimization; proceedings /},
	publisher = {John Wiley,},
	year = {1979},
	address = {New York:},
	note = {"A Wiley interscience publication"}
}