Kraje Słowiańskie w wiekach średnich. Profanum i Sacrum. Slavonic Countries in the Middle Ages. Profanum and Sacrum. Zeitschrift für Ostmitteleuropa-Forschung, [S. l.], v. 48, n. 3, p. 445–446, 1999. DOI: 10.25627/19994837031. Disponível em: https://openjournals.osmikon.de/zfo/article/view/7031. Acesso em: 16 sep. 2026.