TY  - BOOK
AU  - Hopcroft J E et
TI  - Introdution to automata theory languages and computation
SN  - 9788178083476
U1  - SC/ST D6,77(D6,8(B)) L9HI,P1;12 
PY  - 2001///
CY  - New Delhi
PB  - Pearson
ER  -