MATUSIAK-FRĄCCZAK, M. JUS COGENS REVISITED. Review of European and Comparative Law, [S. l.], v. 2627, n. 34, p. 55–64, 2016. DOI: 10.31743/recl.4978. Disponível em: https://czasopisma.kul.pl/index.php/recl/article/view/4978. Acesso em: 14 may. 2024.