| Parker, Evolving the narrow language faculty: was recursion the pivotal step?, 2006 | :: | |
| Ritchie,Kirby, Selection, domestication, and the emergence of learned communication systems, 2005 | :: | 1 |
| Sasahara,Ikegami, Song Grammars as Complex Sexual Displays, 2004 | :: | 3 |
| Scott-Phillips, Why talk: an Adaptationist Approach, 2005 | :: |