Cucker, F. and S. Smale (2002). On the mathematical foundations of learning. Bulletin Amer. Math. Soc. 39, 1--49.

Cucker, F. and R. Wong (2000). The Collected Papers of Stephen Smale. World Scientific.

De Boer, B. (2001). The Origins of Vowel Systems. Oxford University Press.

Fant, G. (1970). Acoustic Theory of Speech Production. Mouton.

Haussler, D. (1992). Decision theoretic generalizations of the PAC model for neural net and other learning applications. Information and Computation 100, 78--150.

Ke, J., J. Minett, C.-P. Au, and W. S-Y. Wang (2002). Self-organization and natural selection in the emergence of vocabulary. To appear in Complexity.

Kirby, S. and J. R. Hurford (2001). The emergence of linguistic structure: an overview of the iterated learning model. In D. Parisi and A. Cangelosi (Eds.), Computational Approaches to the Evolution of Language and Communication. Springer-Verlag.

Lyons, J. (1981). Language and Linguistics: An Introduction. Cambridge University Press.

Minett, J. and W. S-Y. Wang (2003). Language Acquisition, Change and Emergence. To appear.

Niyogi, P. (1998). The Informational Complexity of Learning. Kluwer Academic Publishers.

Niyogi, P. (2003a). The computational nature of language learning and evolution. http://www.cs.uchicago.edu/niyogi.

Niyogi, P. (2003b). Phase transitions in language evolution. Preprint.

Nowak, M., N. Komarova, and P. Niyogi (2001). Evolution of universal grammar. Science 404, 495--498.

Saussure, F. (1983). Course in General Linguistics. Duckworth. Translated and annotated by Roy Harris.

Seneta, E. (1973). Non-Negative Matrices. John Wiley & Sons.

Smale, S. (1963). Stable manifolds for di#erential equations and di#eomorphisms. Annali delle Scuola Normale Sup. di Pisa XVII, 97--116. Reprinted in [Cucker and Wong 2000, Volume 2].

Smale, S. (1981). Global analysis and economics. In K. Arrow and M. Intrilligator (Eds.), Handbook of Mathematical Economics, pp. 331--370. Elsevier Science. Reprinted in [Cucker and Wong 2000, Volume 1].

Stevens, K. (1998). Acoustic Phonetics. The MIT Press.

Vapnik, V. (1998). Statistical Learning Theory. John Wiley & Sons.

Yang, C. (2003). Knowledge and Learning in Natural Language. Oxford University Press.