1. Hiller, L., Isaacson, L.: Experimental Music. McGraw-Hill, New York (1959)
2. Xenakis, I.: Formalized Music, Revised edn. Pendragon Press, New York (1992)
3. Cope, D.: Computers and Musical Style. A-R Editions. Madison, Wisconsin (1991)
4. Galatea Project,
http://hil.t.u-tokyo.ac.jp/~galatea/
5. Sako, S., Miyajima, C., Tokuda, K., Kitamura, T.: A Singing Voice Synthesis System Based on Hidden Markov Model. Transactions of IPSJ, 719–727 (2004) (in Japanese)