1. Flanagan, J.: Speech Analysis, Synthesis and Perception. Springer, Heidelberg (1972)
2. Atkinson, M., McHanwell, S.: Basic Medical Science for Speech and Language Pathology Students. Whurr (2002)
3. International Phonetic Association: Handbook of the international phonetic association. Cambridge University Press (1999)
4. Ashby, M.: Phonetic classification. In: Brown, et al. (eds.) Encyclopedia of Language and Linguistics, 2nd edn., Elsevier, Amsterdam (2005)
5. Banse, R., Scherer, K.: Acoustic profiles in vocal emotional expression. Journal of Personality and Social Psychology 70, 614–636 (1996)