@book { DasWunderanderWeichsel,
    title = "​Das Wunder an der Weichsel",
    subtitle = "​Zum polnisch-sowjetrussischen Krieg 1919-1921",
    author = "Hartmut Michael {Kühn}",
    year = "2022",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b19822",
    url = "https://www.peterlang.com/document/1263930"
}