CHERKUNOV, O. Institutional and legal challenges of pension and social security systems for customs officers: a comparative study of Ukraine and the EU member states. Studia Prawnicze KUL, [S. l.], n. 1, p. 9–25, 2026. DOI: 10.31743/sp.19018. Disponível em: https://czasopisma.kul.pl/index.php/sp/article/view/19018. Acesso em: 2 kwi. 2026.