TY  - BOOK
AU  - Hopcroft,John E..
AU  - Ullman,Jeffrey D..
TI  - Introduction to automata theory, languages and computation / 
SN  - 8185015961
U1  - 511.3 
PY  - 1987/// (rep.1997)
CY  - New Delhi : 
PB  - Narosa Publishing House , 
KW  - MACHINE THEORY
N1  - NULL
ER  -