TY  - BOOK
AU  - Oppenheim, Alan V and Alan S. Willsky 
TI  - Signals & systems
SN  - 0136511759
AV  - QA 402  .O67 1997
PY  - 1997///
CY  - Upper Saddle River
PB  - Prentice-Hall 
KW  - Systems analysis
KW  - Signal theory (telecommunication)
ER  -