@inbook{MaGr91,
	author = {Rudolf Mathar and Patrick Groenen},
	title = "Algorithms in convex analysis applied to {M}ultidimensional {S}caling",
	pages = "45-56",
	volume = "45",
	publisher = "Nova Science Publishers",
	series = "Symbolic-Numeric Data Analysis and Learning",
	editor = "E. Diday, Y. Lechevallier",
	address = "New York",
	year = 1991,
	hsb = {RWTH-CONV-223644},
	}