Kirby, S. and Christiansen, M. H. (2003) From language learning to language evolution. In M.H. Christiansen and S. Kirby, editors, Language Evolution: The States of the Art . Oxford University Press.

Kirby, S. and Christiansen, M. H. (2003) From language learning to language evolution. In M.H. Christiansen and S. Kirby, editors, Language Evolution: The States of the Art. Oxford University Press.