@book { CodeSharing,
    title = "Code-Sharing",
    subtitle = "Rechtliche Betrachtung einer Kooperationsform im Luftverkehr",
    author = "Thomas {Götting}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095125"
}