"A Simple Explanation for Taxon Abundance Patterns."

Chu, Johan S.G., and Christoph Adami. Proceedings of the National Academy of Sciences Vol. 96, No. 26 (1999): 15017-19. Download Paper.

"Propagation of Information in Populations of Self-replicating Code."

Johan S.G. Chu, and Christoph Adami. In Artificial Live V, Proceedings of the Fifth International Workshop on the Synthesis and Simulation of Living Systems, edited by C.G. Langton and K. Shimohara. Cambridge, MA: January 1997. arXiv Preprint.