Composition with twelve notes related only to one another /
Rufer, Josef.
Searle, Humphrey.
London Barrie and Rockliff
1969
This translation originally published, New York: Macmillan (N.Y.); (B54-12117) London: Barrie & Rockliff, 1954. Originally published as 'Die Komposition mit zwölf Tönen'. Berlin: Max Hesses Verlag, 1952
Twelve-tone system.