1. American League of Orchestras, About the Orchestra 〈http://www.americanorchestras.org〉.
2. An interactive case-based reasoning approach for generating expressive music;Arcos;Appl. Intell.,2001
3. J.M. Barbour, Tuning and Temperament a Historical Survey, Michigan State College Press, E. Lansing, 1951. Reprinted by Dover, 2004.
4. Music: A Mathematical Offering;Benson,2006
5. H. Borup, A History of String Intonation 〈http://www.hasseborup.com/〉.