| 1992 | - | Evolution of Communication in Artificial Organisms - Werner,Dyer | :: | 82 |
| 1992 | - | Synthetic Ethology: An approach to the study of communication - MacLennan | :: | 56 |
| 1980 | - | Rules and Representations - Chomsky | :: | 55 |
| 1993 | - | The origins of order - Kauffman | :: | 4 |