TY  - BOOK
AU  -  Sinkov, Abraham,
TI  -  Elementary cryptanalysis: a mathematical approach 
T2  -  New mathematical library,
U1  -  652.8 3 23 
PY  - 1968///]
CY  -  [New York]
PB  -  Yale University
KW  -  Cryptography
KW  -  Mathematics
KW  -  Ciphers
N1  -  Includes bibliographical references and index
ER  -