NYCZ, M. A. Pursuing claims under unfair contract terms on the basis of undue performance provisions. The Opole Studies in Administration and Law, [S. l.], v. 18, n. 3, p. 75–91, 2020. DOI: 10.25167/osap.2590. Disponível em: https://czasopisma.uni.opole.pl/index.php/osap/article/view/2590. Acesso em: 22 nov. 2024.