Yaschenko, V V <br/><br/>
Cryptography  an introduction 

 - American mathmatical society, (s.l.)  2009 
 - ix,229p 
<br/><br/><label>ISBN: </label>978 0 8218 4850 0 
<br/><br/><label>Dewey Class. No.: </label>001.5436 Yas