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References
- ↑ C. L. Barczak (11 March 2010). A Indecifrável Enigma. Clube de Autores. pp. 224–. PKEY:90161545.
- ↑ McCarthy, Jerry. "Virtual Talk LACIDA - A Polish Cryptomachine". www.youtube.com. Retrieved Dec 24, 2020.
- ↑ Władysław Kozaczuk, Enigma (1984), p. 134.
- ↑ Władysław Kozaczuk, Enigma (1984), p. 212.
- ↑ Władysław Kozaczuk, Enigma (1984), p. 119.
- ↑ Władysław Kozaczuk, Enigma (1984), pp. 134–35.
- ↑ Władysław Kozaczuk, Enigma (1984), p. 135.
