@book { DasInternationalePrivatrechtderzivilenVerkehrsluftfahrt,
    title = "Das Internationale Privatrecht der zivilen Verkehrsluftfahrt",
    author = "Natalie {Kretschmer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094255"
}