@book { ErnstFreiherrvonWeizsckersBeziehungenzurSchweiz19331945,
    title = "Ernst Freiherr von Weizsäckers Beziehungen zur Schweiz (1933-1945)",
    subtitle = "Ein Beitrag zur Geschichte der Diplomatie",
    author = "Stephan {Schwarz}",
    year = "2007",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1102493"
}