Beer, A. de
, (1969). The Development of 31-Tone Music, Sonorum Speculum, 38, 1-1.
2.
Fokker, A. D. (1966). Neue Musik mit 31 Tdnen. Orpheus, 5, Dusseldorf. English translation by Gerdine, L. (1975), obtainable from Verlag fur sytematische Musikwissenschaft, 53 Bonn-Bad Godesburg, West Germany.
3.
Hoemer, S. von
(1974). Universal Music?, Psychology of Music, 2, 2-2.
4.
Mandelbaum, M. J. (1961). Multiple Divisions of the Octave and the Tonal Resources of 19-Tone Temperament. Ph.D. Thesis, Indiana University, Bloomington, Indiana.
