Legal regulation of social security principles in the countries of the European Union and Ukraine. Nusantara: Journal of Law Studies, [S. l.], v. 5, n. 1, p. 229–251, 2026. DOI: 10.66325/nusantaralaw.v5i1.227. Disponível em: https://juna.nusantarajournal.com/index.php/juna/article/view/227. Acesso em: 14 mar. 2026.