Mykhailo Hrushevsky, History of Ukraine-Rus’. Volumel: Front Prehistory to the Eleventh Century. Zeitschrift für Ostmitteleuropa-Forschung, [S. l.], v. 47, n. 3, p. 471, 1998. DOI: 10.25627/19984736752. Disponível em: https://openjournals.osmikon.de/zfo/article/view/6752. Acesso em: 16 sep. 2026.