Hopcroft, John E.  Rajeev Motwani  Jeffrey D. Ullman <br/><br/>
Introduction to automata theory, languages, and computation 

 - New Delhi  Dorling Kindersley India Pvt. Ltd  2013 
 - xvi, 487 p.  : ill.  ; 23 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>8131714292 (pbk) 9788131720479 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Formal languages--Computational complexity--Regular expressions--Pushdown automata--Intractable problems--Computation--FC
<br/><br/><label>Dewey Class. No.: </label>511.3  / HOP