Schoffman, Nachum. From Chords to Simultaneities: Chordal Indetermi-nacy and the Failure of Serialism, 51-52, 57, 61-62 and 64. Contributions to the Study of Music and Dance, No. 17. Westport, CT: Greenwood Press, 1990.
Toncitch, Voya. “Dodecaphonie et systemes de 24 et 31 tons.” Schweitzerische Musikzeitung Revue musicale suisse 113/5 (September-October 1973): 274-278.