Kołacz-Chmiel, Małgorzata. “The Society of the Polish-Ruthenian Borderland in Times of Change (in the Example of the 15th-Century Nobility of the Hrubieszów County in Chełm Land)”. Zeitschrift für Ostmitteleuropa-Forschung, vol. 74, no. 3, Sept. 2025, pp. 317–350, https://doi.org/10.25627/202574311701.