TY  - BOOK
AU  - Hopcroft,John E.
AU  - Ullman,Jeffrey D.
TI  - Introduction to automata theory, languages, and computation 
SN  - 8185015961
U1  - 681.3.062 
PY  - 1979///
CY  - New Delhi
PB  - Narosa
KW  - Machine theory
KW  - Formal languages
KW  - Computational complexity
ER  -