“MEЖYHAPOДHbIE ДOГOBOPbI: Dz.U.1960, Nr 2. Poz 5”. Contemporary Central & East European Law, no. 1 (December 30, 2019): 61. Accessed October 6, 2025. https://czasopisma.inp.pan.pl/index.php/cceel/article/view/1637.