TY  - BOOK
AU  - Oppenheim, Alan V; Willsky, Alan S.
TI  - Signals and systems
SN  - 876925034
U1  - 621.3822 OPPA 
PY  - 1992///
CY  - New Delhi
PB  - Prentice Hall of India PVt Ltd
KW  - Digital Systems
ER  -