@book { DieEntstehungderAlpen,
    title = "Die Entstehung der Alpen",
    author = "Andy {Schober}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640496471",
    url = "https://www.hausarbeiten.de/document/139624"
}