1. N. Akhtar and L. Montague. Early lexical acquisition: The role of cross-situational learning. First Language, 19:347--358, 1999.

2. P. Bloom. How Children Learn the Meanings of Words. The MIT Press, Cambridge, MA. and London, UK., 2000.

3. M. M. Chouinard and E. V. Clark. Adult reformulations of child errors as negative evidence. Journal of Child Language, 30(3):637--669, 2003.

4. T.M. Cover and P.E. Hart. Nearest neighbor pattern classification. IEEE Transactions on Information Theory, IT-13(1):21--7, January 1967.

5. T. Gong, J. Ke, J. W. Minett, and W. S-Y. Wang. A computational framework to simulate the co-evolution of language and social structure. In ALife 9, Boston, MA, U.S.A., 2004.

6. J. R. Hurford. Biological evolution of the saussurean sign as a component of the language acquisition device. Lingua, 77,2:187--222, 1989.

7. S. Kirby. Spontaneous evolution of linguistic structure: an iterated learning model of the emergence of regularity and irregularity. IEEE Transactions on Evolutionary Computation, 5(2):102--110, 2001.

8. M. Oliphant. The learning barrier: Moving from innate to learned systems of communication. Adaptive Behavior, 7 (3-4):371--384, 1999.

9. W. V. O. Quine. Word and object. Cambridge University Press, 1960.

10. A. D. M. Smith. Intelligent meaning creation in a clumpy world helps communication. Artificial Life, 9(2):559--574, 2003.

11. L. Steels. Emergent adaptive lexicons. In P. Maes, editor, SAB96, Cambridge, MA, 1996. MIT Press.

12. L. Steels. The synthetic modeling of language origins. Evolution of Communication, 1(1):1--34, 1997.

13. L. Steels, F. Kaplan, A. McIntyre, and J. Van Looveren. Crucial factors in the origins of word-meaning. In A. Wray, editor, The Transition to Language, pages 214--217. Oxford University Press, Walton Street, Oxford OX2 6DP, UK, 2002.

14. L. Steels and P. Vogt. Grounding adaptive language games in robotic agents. In C. Husbands and I. Harvey, editors, Proceedings of the Fourth European Conference on Artificial Life, Cambridge Ma. and London, 1997. MIT Press.

15. M. Tomasello. The cultural origins of human cognition. Harvard University Press, 1999.

16. P. Vogt. Bootstrapping grounded symbols by minimal autonomous robots. Evolution of Communication, 4(1):89--118, 2000.

17. P. Vogt. Thsim v3.2: The talking heads simulation tool. In ECAL03, pages 535 -544. Springer-Verlag, 2003.

18. P. Vogt and H. Coumans. Investigating social interaction strategies for bootstrapping lexicon development. Journal of Artificial Societies and Social Simulation, 6(1), 1 2003.

19. P. Vogt and F. Divina. Language evolution in large populations of autonomous agents: issues in scaling. In Proceedings of AISB 2005: Socially inspired computing joint symposium, pages 80--87, 2005.

20. P. Vogt and A. D. M. Smith. Learning colour words is slow: a cross-situational learning account. Behavioral and Brain Sciences, page In press, 2005.