@book { SiedlungundVerkehrimrmischenReich,
    title = "Siedlung und Verkehr im römischen Reich",
    author = "Regula {Frei-Stolba}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1096828"
}