Hopcroft, John E.,   1939- <br/><br/>
Formal languages and their relation to automata /  
John E.Hopcroft.  
 - Massachusetts:  Addison-Wesley,  1969 
 - 242 p. 
<br/><br/> Problemas al final de capitulo 
<br/><br/><label>Universal Decimal Class. No.: </label>681.32 H77