TY  - GEN
AU  - Chen,Wai-Kai
TI  - Passive, active, and digital filters 
SN  - 0849372771
U1  - 621.3815324 
PY  - 2006///
CY  - Boca Raton
PB  - Taylor & Francis
KW  - Electric filters, Digital
KW  - Electric filters, Passive
KW  - Electric filters, Active
UR  - http://libproxy1.nus.edu.sg/login?url=http://www.engnetbase.com/books/4671/7277fm.pdf
ER  -