TY  - BOOK
AU  - Liu,Bede
TI  - Digital filters and the fast Fourier transform 
SN  - 0470541504
U1  - 621.381532 
PY  - 1975///]
CY  - Stroudsburg, Pa., [New York]
PB  - Dowden, Hutchinson & Ross, distributed by Halsted Press
KW  - Electric filters, Digital
KW  - Fourier transformations
ER  -