Benward, B.
and White, G. (1977-1989). Music in Theory and Practice: Vol. 1. Dubuque, Iowa: W. C. Brown Publishers; 4th ed.
2.
Kronman, U.
and Sundberg, J. (1987). Is the musical ritard an allusion to physical motion? In: A. Gabrielsson (Ed.), Action and Perception in Rhythm and Music. Stockholm: Royal Swedish Academy of Music.
3.
Terhardt, E.
, Stoll, G. and Seewann, M. (1982). Algorithm for extraction of pitch and pitch salience from complex tonal signals. Journal of the Acoustical Society of America, 71, 679-688.
