Modern active filter design 
edited by Rolf Schaumann, Michael A. Soderstrand, Kenneth R.Loker 
 - New York  The Institute of Electrical and Electronics Engineers  1982 
 - 426p. 29cm. 
<br/><br/> 'A volume in the IEEE Press Selected Reprint Series, prepared under the sponsorship of the IEEE Circuits and Systems Society 
<br/><br/><label>ISBN: </label>0879421479 
<br/><br/><label>LCCN: </label>81-2368 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric filters, Active