1. 1Critchley, M. & R.A. Henson, Eds. 1977. Music and the Brain. William Heinemann Med. B. Ltd. London.
2. 2Wallin, N.L., B. Merker & S. Brown, Eds. 2000. The Origin of Music. MIT Press. Cambridge, MA.
3. Ann;Zatorre;N.Y. Acad. Sci.,2001
4. 4Theodosius, A.M. 1963. Commentarium in Somnium Scipionis (2.3, 9). J. Willis, Ed.: 105. B.G. Teubner. Leipzig.