TY  - BOOK
AU  - Oppenheim, Alan V. 
AU  - Willsky, Alan S. 
TI  - Signals and systems / 
SN  - 9788120312463
U1  - 621.3822 
PY  - 2014///.
CY  - Delhi: 
PB  - PHI Learning Pvt. Ltd., 
KW  - Discrete - time concepts
KW  - Signals ans systems
ER  -