Coutinho, S.C. <br/><br/>
Mathematics of ciphers  Number theory amd RSA Cryptography 

 - Natick  A.K. Peters  1998 
 - xv, 196p.  23 cm H.B. 
<br/><br/><label>ISBN: </label>1568810822 
<br/><br/><label>Dewey Class. No.: </label>512.7  / COU