Torrieri, Don J. <br/><br/>
Principles of secure communication systems 
Don J. Torrieri 
 - 2nd ed. 
 - Boston  Artech House  1992 
 - 576 p. : ill. ; 24 cm. 
<br/><br/><label>ISBN: </label>0890065551 
<br/><br/><label>LCCN: </label>91-40819 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems--Security measures