TY  - BOOK
AU  - Lewis, Harry R. Papadimitriou, Christos H.
TI  - Elements of the theory of computation
SN  - 9790000000000
U1  - 001.6424  LEW;6 
PY  - 1998///
CY  - New Delhi
PB  - Pearson Education
KW  - computation
ER  -