Sipser, Michael <br/><br/>
Introduction to the theory of computation/ 
Michael Sipser 
 - 2 
 - New Delhi:  Cengage learning,  2006. 
 - 437 
<br/><br/><label>ISBN: </label>8131517500 
<br/><br/><label>Dewey Class. No.: </label>005.1  / SIP/I