1. Ali, S.M., Silvey, S.D.: A general class of coefficients of divergence of one distribution from another. Journal of Royal Statistic Society 28, 131–142 (1966)
2. Apple, W., Hecht, K.: Speaking emotionally: The relation between verbal and vocal communication of affect. Journal of Personality and Social Psychology 42, 864–875 (1982)
3. Argyle, M.: Bodily Communication. Methuen & Co., New York (1988)
4. Banse, R., Scherer, K.: Acoustic profiles in vocal emotion expression. Journal of Personality & Social Psychology 70(3), 614–636 (1996)
5. Barnes, J.: Aristotele complete work (Revised Oxford translation in 2 volumes). Princeton University Press, Princeton (1984)