Schöpferisches Reihendenken von Guido d'Arezzo bis Frank Zappa Grassmann, Bernd
		Pädagogischer Verlag Schwann-Bagel GmbH, Düsseldorf 1978 ISBN: 3-590-12701-5 176 pp, paperback, 23 x 16,5 cm German

This is an officially approved schoolbook in Germany containing  score 'Music for electric violin' and article 'Music as political action' by Frank Zappa.