[1] Ackley, D.H. and Littman, M.L. 1992. Interactions between learning and evolution. In C.G. Langton, C.E. Taylor, J.D. Farmer and S. Rasmussen.1992. Artificial Life II. Addison Wesley.

[2] Ackley D,H. and Littman, M.L. 1994. Altruism in the Evolution of Communication. In R.A. Brooks, P. Maes, (eds), Artificial Life IV. Proceedings of the Fourth International Conference on Artificial Life, The MIT Press, pp.40-48.

[3] Arita, T. and Taylor, C.E. 1996. A simple model for the evolution of communication. In: L.J. Fogel, P.J. Angeline, T. Back, (eds), Evolutionary Programming V. The MIT Press, pp.405--410.

[4] Cheney, D. and Seyfarth, R.M. 1990. How Monkeys See the World. University of Chicago Press.

[5] Di Paolo, E. A. 1998. An investigation into the evolution of communication. Adaptive Behavior, 6(2):285--324.

[6] Hauser, M. 1996. The Evolution of Communication. The MIT Press.

[7] Hinton, G.E. and Nowlan, S.J. 1987. How learning can guide evolution. Complex Systems1, pp.495--502.

[8] Hashimoto, T. and Ikegami, T. 1996. Emergence of net-grammar in communicating agents, BioSystems 38:1--14.

[9] Hurford, J. R. 1989. Biological evolution of the saussurean sign as a component of the language acquisition device. Lingua 77, pp.187-222.

[10] Marler, P. 1998. Animal communication and human language. In N.G. Jablonski and L.C . Aiello (eds.) The Origin and Diversification of Language. University of California Press.

[11] Maynard-Smith J (1982), Evolution and the Theory of Games. Cambridge University Press.

[12] Mitchell, M. 1996. An introduction to genetic algorithms. The MIT Press.

[13] Nowak M.A., Plotkin, J.B. and Krakauer, D. 1999. The evolutionary language game. Journal of Theoretical Biology, 200(2):147--162.

[14] Oliphant, M. 1996. The dilemma of saussurrean communication. BioSystems, 37(1-2), pp.31--38.

[15] Oliphant, M. and Batali, J. 1997. Learning and the emergence of coordinated communication. Center for Research on Language Newsletter, 11(1).

[16] Pinker, S. 1994. The Language Instinct. William Morrow and Company.

[17] de Saussure, F. 1986. Course in general linguistics. Open Court.

[18] Steels, L. 1996. Self-organizing vocabularies. In: C. Langton and T. Shimohara (eds), Artificial Life V. Proceedings of the Fifth International Conference on Artificial Life, The MIT Press, pp.179--184.

[19] Turkel, W.J. 2002. The learning guided evolution of natural language. In T. Briscoe (ed.) Linguistic Evolution through Language Acquisition. Cambridge University Press, pp.235-254.