@book { ModenaAustria,
    title = "Modena - Austria",
    subtitle = "Das Herzogtum und das Kaiserreich von 1814 bis 1867",
    author = "Hanns A. {Faber}",
    year = "1996",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1083249"
}