TY  - BOOK
AU  -  Pattitis, S. A 
TI  - Active filters : theory and design
SN  -  1420054767 (hardback)
AV  - TK7872 PAC 
PY  - 2008///
CY  - Boca Raton:  
PB  - CRC Pres
KW  - Electric filters
KW  - Design and construction
N1  - Incudes bibliographical references
ER  -