Yasser Hassan Eiichiro Tazaki Emergent Computation Using a New Model of Cellular Automata. 39-69 2003 17 Applied Artificial Intelligence 1 http://taylorandfrancis.metapress.com/openurl.asp?genre=article&issn=0883-9514&volume=17&issue=1&spage=39 db/journals/aai/aai17.html#HassanT03