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[[OPPL 97] |
R. Opplinger: |
IT – Sicherheit Vieweg Braunschweig, Wiesbaden, 1997. |
|
[[OPPL 98] |
R. Opplinger: |
Internet and Internet security Artech
House Publishers, Norwood MA 02062 USA 1998. |
|
[[ORE 65] |
Oystein Ore: |
Cardano the
Gambling Scholar
Dover
Publications, Inc. New York, 1965. |