Lewis, Harry R., <br/><br/>
Elements of the theory of computation 
By Harry R. Lewis 
 - 2nd. 
 - Delhi:  Pearson prentice hall,  2006. 
 - 361 p.:  ill;  22 cm. 
<br/><br/><label>ISBN: </label>81-317-0387-8 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics Computation 
<br/><br/><label>Dewey Class. No.: </label>511.35