Ginsburg, Seymour. <br/><br/>
Mathematical theory of context-free languages   
by Seymour Ginsburg 
 - New York  McGraw-Hill  1966 
 - ix, 232p.  incl. app., ind. 
<br/><br/><label>LCCN: </label>66-14805 
<br/><br/><label>Dewey Class. No.: </label>001.642  / N668