@book { KonjunkturundKrise,
    title = "Konjunktur und Krise",
    author = "Manuel {Duwe}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640311040",
    url = "https://www.hausarbeiten.de/document/125448"
}