1. Houston, D. M. & Jusczyk, P. W.: The role of talker-specific information in word segmentation by infants. Journal of Experimental Psychology: Human Perception and Performance 26: (2000) 1570-1582

2. Jackendoff, R.: Foundations of language. Oxford University Press, Oxford (2002)

3. Mitani, J. C. & Marler, P.: A phonological analysis of male gibbon singing behavior. Behaviour 109: (1989) 20-45

4. Cooper, F. S., Delattre, P. C., Liberman, A. M., Borst, J. M. & Gerstman, L. J.: Some Experiments on the Perception of Synthetic Speech Sounds. Journal of the Acoustical Society of America 24: (1952) 597-606

5. Oudeyer, P.-Y.: Phonemic coding might be a result of sensory-motor coupling dynamics. In: Hallam, J. (ed.): Proceedings of the International conference on the simulation of adaptive behavior (SAB). MIT Press, Edinburgh (2002) 406-416

6. Hurford, J.: The evolution of the critical period for language acquisition. Cognition 40: (1991) 159-201

7. Steels, L.: Synthesising the origins of language and meaning using co-evolution, selforganisation and level formation. In: Hurford, J. R., Michael, S.-K. & Knight, C. (eds.): Approaches to the Evolution of Language. Cambridge University Press, Cambridge (1998) 384-404

8. Smith, K., Kirby, S. & Brighton, H.: Iterated Learning: a framework for the emergence of language. Artificial Life 9: (2003) 371-386

9. Zuidema, W.: How the poverty of the stimulus solves the poverty of the stimulus. In: Becker, S., Thrun, S. & Obermayer, K. (eds.): Advances in Neural Information Processing Systems 15. MIT Press, Cambridge, MA (2003) 51-58

10. Nowak, M. A. & Krakauer, D.: The evolution of language. Proceedings of the National Academy of Sciences 96: (1999) 8028-8033

11. Shannon, C. E.: A mathematical theory of communication. The Bell system technical journal 27: (1948) 379-423,623-656

12. Maynard Smith, J.: Models in Ecology. Cambridge University Press, Cambridge (1974)

13. De Boer, B.: The origins of vowel systems. Oxford University Press, Oxford (2001)

14. De Boer, B.: Self organization in vowel systems. Journal of Phonetics 28: (2000) 441-465

15. Geissmann: Duet-splitting and the evolution of gibbon songs. Biological Reviews of the Cambridge Philosophical Society 77: (2002) 57-76