Sinkov, A., & Irwin, P. L. (1966). Elementary cryptanalysis: A mathematical approach. Mathematical Association of America.
Lua i Stíl Chicago (17ú heag.)Sinkov, Abraham, agus Paul L. Irwin. Elementary Cryptanalysis: A Mathematical Approach. [Washington]: Mathematical Association of America, 1966.
Lua MLA (9ú heag.)Sinkov, Abraham, agus Paul L. Irwin. Elementary Cryptanalysis: A Mathematical Approach. Mathematical Association of America, 1966.
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