Jawor, Grzegorz. “The Role of Serfdoms in the Obligation System of the Inhabitants of Villages on the Wallachian Law in Lesser Poland (Małopolska) and Crown Ruthenia (15th-16th century).”. Balcanica Posnaniensia. Acta et studia 26 (January 26, 2020): 249-267. Accessed December 9, 2021. https://pressto.amu.edu.pl/index.php/bp/article/view/19687.