@book { InternetundIntranetEinsatzimHandel,
    title = "Internet- und Intranet-Einsatz im Handel",
    author = "Jörg {Schwarz}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832415600",
    url = "https://m.diplom.de/document/217402"
}