@book { KonsuminderKrise,
    title = "Konsum in der Krise",
    author = "Jeannette {Rüttgers}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832488314",
    url = "https://m.diplom.de/document/224010"
}