Th.S. Ray: opere
- 1992 An Approach to the Synthesis of Life, Addison-Wesley, Redwood City, Cal., [rif.]
- in: C.G. Langton, C. Taylor, J.D. Farmer, S. Rasmussen (a cura di), Artificial Life II, Santa Fe Institute Studies in the Sciences of Complexity, Proceedings vol.11,
- 1994 Evolution and Complexity, Addison-Wesley, Reading, Mass., [rif.]
- in: G.A. Cowan, D. Pines, D. Meltzer (a cura di), Complexity. Metaphors, Models and Reality, Santa Fe Institute Studies in the Sciences of Complexity, Proceedings vol.19