Szczotka, Jerzy. “Trading in the Material Carrier of the Work in the Perspective of Property Law and Copyright”. Regional Barometer. Analyses & Prognoses 16, no. 5(S) (August 26, 2019): 107–120. Accessed February 19, 2026. https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/69.