Yasser Hassan Eiichiro Tazaki Adaptive Behavior in Cellular Automata Using Rough Set Theory. 155-175 2003 17 Applied Artificial Intelligence 2 http://taylorandfrancis.metapress.com/openurl.asp?genre=article&issn=0883-9514&volume=17&issue=2&spage=155 db/journals/aai/aai17.html#HassanT03a