TY  - BOOK
AU  - Hopcroft, John E
AU  - Ullman, Jeffrey D
TI  - Introduction to automata theory, languages and computation
SN  - 8185015961
CY  - New Delhi
KW  - Automata theory
KW  - Computational complexity
KW  - Formal languages
KW  - Machine theory
N1  - Includes bibliographical references and index
ER  -