@book { DasInformationsundEntscheidungsverhaltenltererMenschenamPointofSale,
    title = "Das Informations- und Entscheidungsverhalten älterer Menschen am Point of Sale",
    author = "Gunnar {Görtz} and Florian {Fuchs}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832444525",
    url = "https://m.diplom.de/document/220059"
}