Victor Poupet Cellular Automata: Real-Time Equivalence Between One-Dimensional Neighborhoods. 133-144 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3404&spage=133 2005 conf/stacs/2005 STACS db/conf/stacs/stacs2005.html#Poupet05