@book { HeeresergnzungundSozialordnung,
    title = "Heeresergänzung und Sozialordnung",
    author = "Thomas Michael {Schneider}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092455"
}