TY  - BOOK
AU  - Winkel,Brian J.
TI  - The German enigma cipher machine: beginnings, success and ultimate failure 
T2  - Artech House computer security series
SN  - 1580539963
AV  - D810.C88  .G47 2005
PY  - 2005///
CY  - Boston
PB  - Artech House
KW  - Enigma cipher system
KW  - ULTRA (Intelligence system)
KW  - World War, 1939-1945
KW  - Cryptography
KW  - Electronic intelligence
KW  - Germany
ER  -