TY  - BOOK
AU  - Hopcroff,John E
AU  - Ullman,Jeffery D
TI  - Introducation to Automata Theory,Languages,and Computation
SN  - 8185015961
U1  - 006.3(511.3) 
PY  - 2002///
CY  - New Delhi
PB  - Narosa Publishing House
ER  -