@book { GrammaireetmthodeRussesetFranoises1724Teil1,
    title = "Grammaire et méthode Russes et Françoises 1724. Teil 1",
    author = "Jean {Sohier}",
    year = "1987",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12117",
    url = "https://www.peterlang.com/document/1066696"
}