Hopcroft, Jonh E., Introduction to Automata Theory, Languages, and Computation John E. Hopcroft, Rajeev Motwani & Jeffrey D. Ullman - 2nd ed. - Delhi: Pearson Education, c2001. - xiv, 521 p.: [58] ISBN: 8178083477 Dewey Class. No.: 004.0151 / HOP/INT