@book { Societas,
    title = "Societas",
    subtitle = "Struktur und Typenvielfalt des römischen Gesellschaftsvertrages",
    author = "Franz-Stefan {Meissel}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097293"
}