TY  - BOOK
AU  - Hopcroft, John E.
AU  - Ullman, Jeffrey D.
AU  - Motwani, Rajeev
TI  - Introduction to automata theory, languages, and computation
SN  - 9788131720479
U1  - 511.35 
PY  - 2011///
CY  - Delhi
PB  - Pearson
KW  - Machine theory
KW  - Formal languages
KW  - Computational complexity
N1  - Automata: The Methods and the Madness
Finite Automata

Regular Expressions and Languages
Properties of Regular Languages
Context-Free Grammars and Languages

Pushdown Automata

Properties of Context-Free Languages
Introduction to Turing Machines
Undecidability
Intractable Problems

Additional Classes of Problems
ER  -