| Chomsky, Rules and Representations, 1980 | :: | 55 |
| Hashimoto,Ikegami, Evolution of Symbolic Grammar Systems, 1995 | :: | 9 |
| Langton, Artificial Life, 1995 | :: | 15 |
| MacLennan, Synthetic Ethology: An approach to the study of communication, 1992 | :: | 56 |
| Maynard-Smith,Szathmary, The Major Transitions in Evolution, 1997 | :: | 57 |
| Pinker, The Language Instinct: How the Mind Creates Language, 1994 | :: | 120 |
| Prigogine,Stengers, Order Out of Chaos, 1984 | :: | 7 |
| Steels,Brooks, Building Situated Embodied Agents, 1995 | :: | 2 |
| Steels, The Biology and Technology of Intelligent Autonomous Agents, 1995 | :: | 3 |
| Steels, The origins of intelligence, 1996 | :: | 1 |
| Steels, Self-organizing vocabularies, 1996 | :: | 67 |
| Steels, Discovering the competitors, 1996 | :: | 3 |
| Steels, A self-organizing spatial vocabulary, 1996 | :: | 46 |
| Werner,Dyer, Evolution of Communication in Artificial Organisms, 1992 | :: | 82 |
| Wittgenstein, Philosophical Investigations, 1974 | :: | 29 |