Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) UMEO H.,Recent developments in firing squad synchronization algorithms for two-dimensional cellular automata and their state-efficient implementations,"Proc.of the 13th Intern.Conference on Automato and Formal Languages,AFL 2011",,,2011,,,368-387,https://cir.nii.ac.jp/crid/1570572699312557184,