TY  - BOOK
AU  - Varma, G. P. Saradhi.
AU  - Rao, B. Thirupathi 
TI  - Theory of computation : formal languages and automata theory
SN  -  9788188429943
U1  - 005.131 
PY  - 2005///
CY  - Chennai 
PB  - : Scitech Publications
ER  -