@book { GrundzgedesInternationalenWirtschaftsrechts,
    title = "Grundzüge des Internationalen Wirtschaftsrechts",
    author = "Theodor {Enders}",
    year = "2021",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1221409"
}