TY  - GEN
AU  - Schaumann, Rolf
AU  - Valkenborg, Mac E. Van
TI  - Design of analog filters
SN  - 0195471458
U1  -   621.381 22
PY  - 2001///
CY  - Oxford university press
PB  - karachi
KW  - Design of Analog Filters
ER  -