Linz, Peter. <br/><br/>
Introduction to Formal Languages and Automata /  
by Peter Linz. 
 - 2nd ed /  
 - New Delhi :   Narosa Publishing House ,   1996 
 - p377 :  
<br/><br/><label>ISBN: </label>81-7319-224-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Finite automata
<br/><br/><label>Dewey Class. No.: </label>Bv(p)  / N7