T. Arita and Y. Koyama ``Evolution of linguistic diversity in a simple communication system'', Artif. Life,4,pp. 109--124, 1998.

B. Arthur, Y. Ermoliev and Y. Kaniovski, ``A generalized urn problem and its applications'', Cybernetics, 19, pp. 61--71, 1983.

B. Arthur, Y. Ermoliev and Y. Kaniovski, ``Strong laws for a class of path-dependent stochastic processes, with applications'', in Proceedings of the Conference on Stochastic Optimization, Lectures Notes in Control and Information Sciences, V. Arkin, A. Shiryayev and R. Wets, Eds, Berlin: Springer, 1984.

B. Arthur, Y. Ermoliev and Y. Kaniovski, ``Path dependent processes and the emergence of macrostructure'', in Increacing Returns and Path Dependence in the Economy, B.Arthur, Ed.,AnnArbor: MI: University of Michigan Press, 1994, pp. 33--48.

A. Cangelosi and D. Parisi, ``The emergence of a `language'in an evolving population of neural networks'', Connection Sci., 10, pp. 83--97, 1998.

A. Cangelosi and D. Parisi, Simulating the Evolution of Language, Berlin: Springer, 2002.

A. Cangelosi and D. Parisi, ``The processing of verbs and nouns in neural networks: insights from synthetic brain imaging'', Brain Language, 89, pp. 401--408, 2004.

F. Chung, S. Handjani and D. Jungreis, ``Generalizations of polya's urn problem'', Ann. Combinatorics, 7, pp. 141--154, 2003.

F. Kaplan B. De Boer, The Origins of Vowel Systems, Oxford: Oxford University Press, 2001.

E.D. De Jong and L. Steels, ``A distributed learning algorithm for communication development'', Complex Syst., 14, pp. 315--334, 2003.

C. Dircks and S. Stoness, ``Effective lexicon change in the absence of population flux'', in Advances in Artificial Life (ECAL 99), Lecture Notes in Artificial Intelligence 1674, D. Floreano, J.-D. Nicoud and F. Mondada, Eds, Berlin: Springer, 1999, pp. 720--724.

R. Ferrer and R. Sole, ``Naming games through distributed reinforcement'', Unpublished Report (1998).

R. Ferrer and R. Sole, ``Least effort and the origins of scalin in human language'', Proc. Natl Acad. Sci. USA, 100, pp. 788--791, 2003.

B. Huberman and T. Hogg, ``The behavior of computational ecologies'', in The Ecology of Computation, B. Huberman, Ed., Amsterdam: Elsevier, 1998.

E. Hutchins and B. Hazlehurst, ``How to invent a lexicon: the development of shared symbols in interaction'', in Artificial Societies: The Computer Simulation of Social Life, N. Gilbart and R. Conte, Eds, London: UCL Press, 1995, pp. 157--189.

M. Iosifescu and R. Theodorescu, Random Processes and Learning, Berlin: Springer, 1969.

F. Kaplan, ``A new approach to class formation in multi-agent simultions of language evolution'', in Proceedings of the 3rd international conference on Multi-agent Systems (ICMAS 98), Y. Demazean, Ed., Los Alamitos, CA: IEEE Computer Society, 1998, pp. 158--165.

F. Kaplan, ``Semiotic schemata: selection units for linguistic cultural evolution'', in Proceedings of Artificial Life VII, Cambridge, MA: MIT Press, 2000, pp. 372--381.

F. Kaplan, La Naissance d'une Langue les Robots, Paris: Hermes Science, 2001.

J. Ke, J. Minett, C.-P. Au and W.Wang, ``Self-organization and selection in the emergence of vocabulary'', Complexity, 7, pp. 41--54, 2002.

K. Khanin and R. Khanin, ``A probabilistic model for establishment of neuron polarity'', Technical Report, HPLBRIMS-2000-16 (2000).

R. Kinderman and S.L. Snell, Markov Random Fields and their Applications, American Mathematical Society, 1980.

S. Kirby, ``Natural language and artificial life'', Artif. Life, 8, pp. 185--215, 2002.

D. Lewis, Convention: A Philosophical Study, Cambridge, MA: Harvard University Press, 1969.

D. Livingstone and C. Fyfe, ``Modelling the evolution of linguistic diversity'', in Advances in Artificial Life (ECAL 99), Lecture Notes in Artificial Intelligence 1674, D. Floreano, J.-D. Nicoud and F. Mondada, Eds, Berlin: Springer, 1999, pp. 704--708.

M. Nowak and D. Krakauer, ``The evolution of language'', Proc. Natl Acad. Sci. USA, 96, pp. 8028--8033, 1999.

M. Oliphant, ``Formal approaches to innate and learned communicaton: laying the foundation for language.'' PhD thesis, University of California (1997).

P.-Y. Oudeyer, ``Self-organisation of a lexicon in a structured society of agents'', in Advances in Artificial Life (ECAL 99), Lecture Notes in Artificial Intelligence 1674, D. Floreano, J.-D. Nicoud and F. Mondada, Eds, Berlin: Springer, 1999, pp. 726--729.

P.-Y. Oudeyer, ``The self-organization of speech sounds'', J. Theor. Biol., 233, pp. 435--449, 2005.

Y. Shoham and M. Tennenholtz, ``On the emergence of social conventions: modeling, analysis, and simulations'', Artif. Intell, 94, pp. 139--166, 1997.

K. Smith, ``The evolution of vocabulary'', J. Theor. Biol., 228, pp. 127--142, 2004.

K. Smith, S. Kirby and H. Brighton, ``Iterated learning: a framework for the emergence of language'', Artif. Life,9, pp. 371--386, 2003.

L. Steels, ``Self-organizing vocabularies'', in Proceedings of Artificial Life V, C. Langton and T. Shimohara, Eds, Cambridge, MA: MIT Press, 1996.

L. Steels and F. Kaplan, ``Spontaneous lexicon change'', in Proceedings of COLING-ACL 1998, Montreal: ACL, 1998a, pp. 1243--1249.

L. Steels and F. Kaplan, ``Stochasticity as a source of innovation in language games'', in Proceedings of Artificial Life VI, C. Adami, R. Belew, H. Kitano and C. Taylor, Eds, Cambridge, MA: The MIT Press, 1998b, pp. 368--376.

L. Steels and F. Kaplan, ``Situated grounded word semantics'', in Proceedings of the 16th International Joint Conference on Artificial Intelligence IJCAI'99, T. Dean, Ed., San Francisco, CA: Morgan Kaufmann, 1999, pp. 862--867.

L. Steels and F. Kaplan, ``Bootstrapping grounded word semantics'', in T. Briscoe, editor, Linguistic Evolution through Language Acquisitino: Formal and Computational Models, T. Briscoe, Ed., Cambndge: Cambridge University Press, 2002, pp. 53--73.

P. Vogt, ``Bootstrapping grounded Symbols by minimal autonomous robots'', Evolut. Commun., 4, pp. 89--118, 2000.

P. Vogt, ``Minimum cost and the emergence of the Zip-Mandelbrot law'', in Proceedings of the 9th Artificial Life Conference, Cambridge, MA: MIT Press, 2004.

W.Weidlich and G. Haag, Concepts and Models of a Quantitative Sociology; The dynamics of Interacting Populations, Berlin: Springer, 1983.