Lewis, Harry R <br/><br/>
Elements of the theory of computation 
Harry R. Lewis, Christos H. Papadimitriou 
 - 2nd ed 
 - New Delhi  PHI Learning Private Limited  c1998 
 - 361 p. : ill. ; 25 cm.  
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9788120322332 
<br/><br/><label>ISSN: </label>97013879 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computational complexity<br/>Formal languages<br/>Logic, Symbolic and mathematical<br/>Machine theory
<br/><br/><label>Dewey Class. No.: </label>511.3 LEW