“Ujednolicenie Prawa W Ramach RWPG I EWG I wpływ Tego Procesu Na Handel między Wschodem a Zachodem: [Unification of Law Within the CMEA and ECM and Influence of This Process on Trade Between the East and West]”. Studia Prawnicze The Legal Studies, no. 2 (76), Apr. 1983, pp. 157-65, https://doi.org/10.37232/sp.1983.2.6.