@book { KielunddieRevolutionvon1918,
    title = "Kiel und die Revolution von 1918",
    author = "Klaus {Kuhl}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14242",
    url = "https://www.peterlang.com/document/1110577"
}