| 2008 | - | Primate social knowledge and the origins of language - Seyfarth,Cheney | :: | |
| Arnold K, Zuberbuhler K (2006) Language evolution: compositional semantics in primate calls. Nature 441:303
| ||||
| 2008 | - | Language evolution: neural differences that make a difference - Ghazanfar | :: | |
| 10. Arnold, K. & Zuberbuhler, K. Nature 441, 303 (2006).
| ||||