@book { DieRollevonWisseninderinternationalenPolitik,
    title = "Die Rolle von Wissen in der internationalen Politik",
    author = "Max {Ehlers}",
    year = "1997",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/216078"
}