@book { KriseundZerfalleinerWeltmacht,
    title = "Krise und Zerfall einer Weltmacht",
    author = "Johannes {Zuber}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-00794-7",
    url = "https://www.peterlang.com/document/1044457"
}