@book { DasUNKaufrechtimSpiegelderspanischsprachigenLnder,
    title = "Das UN-Kaufrecht im Spiegel der spanischsprachigen Länder",
    author = "Christina {Kottke}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107840"
}