Papers/Articles
- Non-Uniform Cellular Automata: Evolution in Rule Space and Formation of Complex Structures. 1994. In Artificial Life IV
- Quasi-Uniform Computation-Universal cellular automata. 1995. In Advances in Artificial Life
- Testing for Emergence in Artificial Life. 1999. In Advances in Artificial Life, ECAL'99
- Design, Observation, Surprise! A test of emergence. 1999. In Emergence
- Engineering, Emergent Engineering, and Artificial Life: Unsurprise, Unsurprising Surprise, and Surprising Surprise. 2000. In Artificial Life VII
- A Self-Replicating Universal Turing Machine: From von Neumann's Dream to New Embryonic Circuits. 2000. In Artificial Life VII
- Interactive Self-Replicating, Self-Incrementing and Self-Decrementing Loops. 2003. In Artificial Life VIII