Chen,  Wai. Kai. <br/><br/>
Passive and active filters  Theory and implementations 

 - John  wiley & sons, Singapore  2003 
 - xviii,50 
<br/><br/><label>ISBN: </label>9812-53-028-2 
<br/><br/><label>Dewey Class. No.: </label>621.3815324 Che