@book{9570,
	author = {Duran, B. S. and Odell, P. L. and Odell, P. L. ; jt. auth.},
	title = {Cluster analysis; a survey},
	publisher = {Springer-Verlag},
	year = {1974},
	series = {Lecture notes in Economics and Mathematical systems, 100},
	address = {Berlin}
}