Downes, Chris: Prime Numbers in Music Tonality, New York University, New York, 2008 (dostupné na stránkách http://cs.nyu.edu/courses/summer08/G22.2340-001/projects/CD_MusicTheory.pdf)
Downes, Chris: Prime Numbers in Music Tonality, New York University, New York, 2008 (dostupné na stránkách http://cs.nyu.edu/courses/summer08/G22.2340-001/projects/CD_MusicTheory.pdf)