@book { DasSozialsystemderSchweiz,
    title = "Das Sozialsystem der Schweiz",
    author = "Frederik {Böckmann} and Valon {Shabaj} and Matthäus {Spora} and Florian {Zimmeck}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638879477",
    url = "https://www.hausarbeiten.de/document/80677"
}