@book { TendenzenimBankmarketing,
    title = "Tendenzen im Bankmarketing",
    author = "Rachel {Kindermann} and Astrid {Matzeit}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832406110",
    url = "https://m.diplom.de/document/216544"
}