LACH, Eryk. Equality vs. differentiation: on solidarity and justice in social law. Przegląd Prawniczy Uniwersytetu im. Adam Mickiewicza, [S. l.], v. 6, p. 117–133, 2016. DOI: 10.14746/ppuam.2016.6.08. Disponível em: https://pressto.amu.edu.pl/index.php/ppuam/article/view/7175. Acesso em: 29 mar. 2024.