Hopcroft, J.E. Motiwani, Rajeev. Ullman, jeffrey.D Introduction to Automata Theory, Languages, and Computation - 3 - New Delhi Pearson - p.487 ISBN: 9788131720479 Subjects--Topical Terms: Finite Automata Pushdown Automata Undecidability Dewey Class. No.: 621.38195 H791