Klapper, Jacob. <br/><br/>
Phase-locked and frequency-feedback systems:  principles and techniques/ 
by Jacob Klapper, John T. Frankle. 
 - New York:  Academic Press,  1972. 
 - xx,393 pages:    ill.;    24 cm. 
 - Electrical science. .
<br/><br/> Includes index. 
<br/><br/>Bibl. p.355-380. 
<br/><br/><label>ISBN: </label>0124108504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Parametrons.<br/>Feedback (Electronics).