1. Language and Species;Bickerton,1990
2. Reflections on Language;Chomsky,1975
3. On the supposed ‘counterfunctionality’ of Universal Grammar: some evolutionary implications;Newmeyer,1998
4. Preconditions for the evolution of protolanguages;Donald,1999
5. Natural language and natural selection;Pinker;Behav. Brain Sci.,1990