@book { KundenbindungimLebensmitteleinzelhandel,
    title = "Kundenbindung im Lebensmitteleinzelhandel",
    author = "Jens {Lindner}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832482268",
    url = "https://m.diplom.de/document/223442"
}