@book { ProduktrckrufealsMarketingproblem,
    title = "Produktrückrufe als Marketingproblem",
    author = "Alexander {Schlüter}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832411350",
    url = "https://m.diplom.de/document/217024"
}