Formal languages and their relation to automata
John E. Hopcroft, Jeffrey D. Ullman.
Reading, Mass. : Addison-Wesley, ©1969.
vii, 242 págs. : ilustraciones ; 24 cm.
Serie: Addison-Wesley series in computer science and information processing
ISBN: 0201029839
Bibliografía: p. 233-238.
Reseña: MathSciNet, 38 #5533