@book { OstpolitikundPropagandaimErstenWeltkrieg,
    title = "Ostpolitik und Propaganda im Ersten Weltkrieg",
    author = "Eberhard {Demm}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093078"
}