TY  - BOOK
AU  - Oppenheim,Alan V.
AU  - Schafer,Ronald W  .
AU  - Buck,John R  .
TI  - Discrete-time signal processing / 
U1  - 621.3822 
PY  - 2008///
CY  - England : 
PB  - Pearson Education , 
KW  - SIGNAL PROCESSING
N1  - Includes index
ER  -