Deacon, T. W. (2003) Universal Grammar and semiotic constraints. In M.H. Christiansen and S. Kirby, editors, Language Evolution: The States of the Art . Oxford University Press.

Deacon, T. W. (2003) Universal Grammar and semiotic constraints. In M.H. Christiansen and S. Kirby, editors, Language Evolution: The States of the Art. Oxford University Press.

xxxx	-	Emergence of self-organized symbol-based communication in artificial creatures - Loula,Gudwin,El-Hani,Queiroz	::
		Deacon, T. (2003). Universal grammar and semiotic constraints. In M. H. Christiansen & S. Kirby (Eds.), Language evolution (pp. 111-139). Oxford: Oxford University Press.
2007	-	Symbols are not uniquely human - Ribeiro,Loula,Araujo,Gudwin,Queiroz	::	1
		Deacon, T.W., 2003. Universal grammar and semiotic constraints. In: Christiansen, M.H., Kirby, S., (Eds.), Language Evolution.Oxford University Press, Oxford.
2006	-	Working backwards from modern language to proto-grammar - Johansson	::	1
		Deacon, T. (2003). Universal grammar and semiotic constraints. In M. H. Christiansen & S. Kirby (Eds.), Language evolution. Oxford: Oxford University Press.
2003	-	Language Evolution: Consensus and Controversies - Christiansen,Kirby	::	14
		11 Deacon, T.W. (2003) Universal grammar and semiotic constraints. In Language Evolution (Christiansen, M.H. and Kirby, S., eds) Oxford University Press