Pers Z (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pers Z" in German language version.

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archive.org

Michael van der Meulen: The Road to German Diplomatic Ciphers – 1919 to 1945. In: Cryptologia. Band 22, Nr. 2, 1998, ISSN 0161-1194, S. 141, doi:10.1080/0161-119891886858 (englisch).
Frode Weierud und Sandy Zabell: German mathematicians and cryptology in WW II. Cryptologia, 44:2, 2020, S. 125, doi: 10.1080/01611194.2019.1600076.

Michael van der Meulen: The Road to German Diplomatic Ciphers – 1919 to 1945. In: Cryptologia. Band 22, Nr. 2, 1998, ISSN 0161-1194, S. 141, doi:10.1080/0161-119891886858 (englisch).