@article{Salzberg2003a, author = {C. Salzberg and A. Antony and H. Sayama}, issn = {1342-2189}, journal = {Journal of Three-dimensional Images}, number = {4}, pages = {103-109}, title = {Genetic diversification and complex genealogy of self-replicators discovered in simple cellular automata: A preliminary report}, volume = {17}, year = {2003} }