Electronic filter design handbook / 
Williams, Arthur B.; Taylor, Fred J. 
 - 4th ed. 
 - New York :  McGraw-Hill Companies, Inc.,  2006. 
 - xv, 775 p.: ill; 23.5 cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0071471715 
<br/><br/><label>Dewey Class. No.: </label>C 004.6 W67 2006