TY  - BOOK
AU  - Schaumann, Rolf
AU  - Xiao, Haiqiao
AU  - Valkenburg, Mac E Van
TI  - Analog filter design
SN  - 9780198098911
U1  - 621.3815324 
PY  - 2011///
CY  - Oxford
PB  - Oxford university press
ER  -