@book { MultimediaInformationssystemeinderTourismusbranche,
    title = "Multimedia-Informationssysteme in der Tourismusbranche",
    author = "Andreas {Fuchs}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832433277",
    url = "https://m.diplom.de/document/219010"
}