Hopcroft, John E., Introduction to Automata Theory, Languages and Computation John E. Hopcroft, Rajeev, Motwani & Jeffrey D. Ullman. - 2nd ed. - New Delhi : Pearson Education Pte. Ltd., c2001. - xiv, 521 p.: [58] ISBN: 8178083477 Dewey Class. No.: 005.131 / HOP/INT