@book { DerDeutscheKriegvon1866,
    title = "Der Deutsche Krieg von 1866",
    author = "Ludwig {Burwitz} and Armin {Nassauer} and Olaf {Wagener}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06104-8",
    url = "https://www.peterlang.com/document/1049659"
}