TY  - BOOK
AU  - Oppenheim, Alan .V
AU  - Willsky, Alan S
AU  - Nawab ,Hamid S
TI  - Signals & system
SN  - 9788177582628
U1  - 621.391 
PY  - 1997///
CY  - New Delhi
PB  - Pearson education
KW  - Signals
KW  - system
N1  - 2006, 2007
ER  -