Hopcroft,John E. Introduction to automata theory, languages, and computation / John E. Hopcroft, Rajeev Motwani, Jefrey D. Ullman. - 2nd ed. - Singapore : Addison Wesley, c2001. - xiv, 513 p. : black and white illustrations ; 23 cm. Includes index. ISBN: 9814096512 Subjects--Topical Terms: Machine theory.Formal languages.Computational complexity. Dewey Class. No.: CIR 511.35 H797i 2001