[1] Chomsky, N. (1980) Rules and Representations. Vol 3. pp. 1-15.

[2] Deneubourg, J-L. (1977) Application de l'ordre par fluctuations a la description de certaines etapes de la construction du nid chez les termites. Insectes Sociaux, Tome 24, 2, p. 117-130.

[3] MacLennan, B. (1991) Synthetic Ethology: An Approach to the Study of Communication. In: Langton, C., et.al. (ed.) Artificial Life II. Addison-Wesley Pub. Co. Redwood City, Ca. p. 631-658.

[4] Nicolis, G. and I. Prigogine (1985) Exploring Complexity. Piper, Munchen.

[5] Prigogine, I. and I. Stengers (1984) Order Out of Chaos. Bantam Books, New York.

[6] Werner, G. and M. Dyer (1991) Evolution of Communication in Artificial Organisms. In: Langton, C., et.al. (ed.) Artificial Life II. Addison-Wesley Pub. Co. Redwood City, Ca. p. 659-687.

[7] Hashimoto, and Ikegami (1996) Same issue.

[8] Pinker, S, and P. Bloom (1990) Natural language and natural selection. Behav. Brain Sci. 13, 707-784.

[9] Steels, L. (1996) Self-organizing vocabularies. Submitted to Alife V. Nara. Japan.

[10] Wittgenstein, L. (1974) Philosophical Investigations. Translated by G. Anscombe. Basil Blackwell, Oxford.