TY  - BOOK
AU  - Oppenhaim, Alan V
AU  - Willsky, Alan S.
TI  - Signals & systems
SN  - 9788131710265 
U1  - 621.3822 
PY  - 1994///
CY  - New Delhi
PB  - Prentice Hall Of India
KW  - Applied physics
ER  -