@book { LudendorffundKappinSchweden,
    title = "Ludendorff und Kapp in Schweden",
    subtitle = "Aus dem Leben zweier Verlierer",
    author = "James {Cavallie}",
    year = "1995",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1115148"
}