@misc{cryptoeprint:2020:390,
    author = {Rémi Géraud-Stewart and David Naccache},
    title = {A French cipher from the late 19th century},
    howpublished = {Cryptology ePrint Archive, Report 2020/390},
    year = {2020},
    url = {https://eprint.iacr.org/2020/390},
}