@book { RudolfCrownPrinceandRebel,
    title = "Rudolf. Crown Prince and Rebel",
    author = "Brigitte {Hamann}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/b10437",
    url = "https://www.peterlang.com/document/1067774"
}