Building in big brother :  the cryptographic policy debate / 
ed. by Lance J. Hoffman. 
 - New York :  Springer-Verlag,  cop. 1995. 
 - XVI, 560 s. ;  24 cm. 
<br/><br/><label>ISBN: </label>0387944419 
<br/><br/><label>Universal Decimal Class. No.: </label>003.26 :  004.056