Graham,John <br/><br/>
Dictionary of telecommunications 

 -   Jaico Publishing House, Mumbai  2001 
 - 180 
<br/><br/><label>ISBN: </label>3434 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Communication Engineering
<br/><br/><label>Dewey Class. No.: </label>621.382  GRA-D