ŚLIWIŃSKI , Błażej. Czech involvement in King Henry V of Germany’s expedition against Poland in September 1109 from the perspective of Polish historiography. Studia z Dziejów Średniowiecza, [S. l.], n. 22, p. 224–242, 2018. DOI: 10.4467/25442562SDS.18.015.9817. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/stzdsr/article/view/3895. Acesso em: 7 maj. 2024.