Lewis, Harry R  & Papadimitriou, Christos H <br/><br/>
Elements of the theory of computation 

 - Prentice-Hall of India, New Delhi  1996 
 - xiv,466 
<br/><br/><label>ISBN: </label>81-203-1016-0 
<br/><br/><label>Dewey Class. No.: </label>001.64 Lew/Pap