Hausleitner, M. „Effects of World War I; The Class War After the Great War. The Rise of Communist Parties in East Central Europe, 1918—1921“. Südost-Forschungen, Bd. 1, Nr. 1, November 2021, S. 304-6, https://www.suedost-forschungen.de/portal/index.php/sof/article/view/9017.