Carlson, Bruce A <br/><br/>
Communication systems 

 - 4th ed 
 - Boston  Mc graw hill  2002 
 - 850p 
 - Mc graw hill series in electrical engineering .
<br/><br/><label>ISBN: </label>0070111278 
<br/><br/><label>Dewey Class. No.: </label>621.382 23  / CAR