Bondarenko, Gennady, Gennady Gulko, and Oleksandr Demianyuk. “Congress of Monarchs in Lutsk in the History and Culture of European Medieval Civilization”. Litopys Volyni, no. 20 (June 26, 2019): 28-35. Accessed October 31, 2024. http://litopys.volyn.ua/index.php/litopys/article/view/148.