TY  - BOOK
AU  - Oppenheim, Alan V.
AU  - Schafer, Ronald W.
TI  - Digital signal processing 
SN  - 0132146355
U1  - 621.3819582 
PY  - 1975///
CY  - Englewood Cliffs
PB  - Prentice Hall
KW  - Signal theory (Telecommunication)
KW  - Digital electronics
ER  -