TY  - BOOK
AU  - Lewis, Harry R. ,
AU  - Papadimitriou, Christos H. ,
TI  - Elements of the theory of computation
SN  - 9788120322332
U1  - 511.3 LEW 
PY  - 2010///
CY  - New Delhi
PB  - PHI
N1  - Includes bibliographical references and index.
ER  -