Daniels, Richard W. <br/><br/>
Approximation Methods for Electronic Filter Design :  with Applications to Passive, Active and Digital Networks / 
Richard W. Daniels. 
 - New York :  McGraw-Hill Book Company,  1974. 
 - 388 s. :  il. ;  24 cm. 
<br/><br/>bibliogr. 
<br/><br/><label>Uniwersalna Klasyfikacja Dziesiętna: </label> 621.38:621.372.54