01026nam--2200361---450-99000322495020331620090422135306.00-262-13076-9000322495USA01000322495(ALEPH)000322495USA0100032249520090422d1971----km-y0itay50------baengUSa---||||001yyCounter free automataRobert Mc Naughton and Seymour PapertCambridgeThe M.I.T. Press1971XIX, 163 p.ill.23 cmResearch monograph652001Research monographLogica matematica511.3MC NAUGHTON,Robert603732PAPERT,Seymour45647ITsalbcISBD990003224950203316511.3 MCN4984/CBS511.300216468BKSCIRSIAV69020090422USA011353Counter free automata1011675UNISA