Christian Raitz von Frentz, A Lesson Forgotten. Minority Protection under the League of Nations. The Case of the German Minority in Poland, 1920-1934. Zeitschrift für Ostmitteleuropa-Forschung, [S. l.], v. 52, n. 4, p. 630, 2003. DOI: 10.25627/20035248171. Disponível em: https://openjournals.osmikon.de/zfo/article/view/8171. Acesso em: 16 sep. 2026.