John Hiden, Defender of Minorities. Paul Schiemann, 1876-1944. Zeitschrift für Ostmitteleuropa-Forschung, [S. l.], v. 55, n. 4, p. 605–607, 2006. DOI: 10.25627/20065548665. Disponível em: https://openjournals.osmikon.de/zfo/article/view/8665. Acesso em: 16 sep. 2026.