TY  - BOOK
AU  - Hopcroft, John E  .
TI  - Introduction to automata theory, languages, and computation / 
SN  - 978-81-317-2047-9
U1  - BV 
PY  - 2009///
CY  - New Delhi : 
PB  - Dominant Publishers and Distributors , 
KW  - Computation- Automata Theory
ER  -