@book { DerivateFluchoderSegen,
    title = "Derivate - Fluch oder Segen?",
    author = "Alexander {Kuhn}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656411086",
    url = "https://www.hausarbeiten.de/document/213117"
}