TY  - BOOK
AU  - Lewis Harry R
AU  -  Papadimitriou Christos H
TI  - Elements of the theory of computation
T2  - Prentice hall software series
U1  - D65,8(B), M1-;1 
PY  - 1981///
CY  - Englewood
PB  - Cliffs Prentice Hall       
KW  - Computer science
ER  -