TY  - BOOK
AU  - Valkenburg Van M. E., 
TI  - Analog Filter Design 
SN  - 0195107349
U1  - 621.3815324 
PY  - 1982///.
CY  - New York
PB  - Oxford University press, 
N1  - This book is having Appendix 
A - Scaling - 587
B - Reference - 601
ER  -