1. Aspects of the Theory of Syntax;Chomsky,1965
2. Evolution of Language;Fitch,2010
3. The Origins of Grammar: Language in the Light of Evolution II;Hurford,2011
4. Language evolution: syntax before phonology?;Collier;Proc. Biol. Sci.,2014
5. Formal monkey linguistics;Schlenker;Theor. Ling.,2016