Sinkov, Abraham,  1907- <br/><br/>
Elementary cryptanalysis:  a mathematical approach/ 
by Abraham Sinkov. 
 - Washington, DC:  Mathematical Association of America,  c1966. 
 - ix, 189 p.;  23 cm. 
 - New mathematical library;  22. .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 184-186. 
<br/><br/><label>LCCN: </label>72089953 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography.<br/>Ciphers.
<br/><br/><label>Dewey Class. No.: </label>510  / S617e