Formal language theory  perspectives and open problems 
edited by Ronald V. Book 
 - New York :  Academic Press,  1980 
 - 454p.  23 cm. 
<br/><br/> Proceedings of a conference held Dec. 10-14, 1979, in Santa Barbara Calif. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>0121153509 
<br/><br/><label>LCCN: </label>80-22435 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Formal languages--Congresses