TY  - BOOK
AU  - Hopcroft John E. 
AU  - Motwani Rajeev
TI  - Introduction to automata theory , languages , and computation
SN  - 978-81-317-2047-9 
U1  - 005.13 
PY  - 2012///
CY  - New Delhi
PB  -  Pearson 
KW  - Engineering
ER  -