@book { PolenaufdemWienerKongress,
    title = "Polen auf dem Wiener Kongress",
    author = "Friedel {Taube}",
    year = "2002",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638157292",
    url = "https://www.hausarbeiten.de/document/8872"
}