Reduction the specified sum to reasonable amount in ?contractual penalties clauses? in polish Civil Code and selected model acts of contract law. Forum Prawnicze, [S. l.], n. 3(59), p. 47–63, 2020. DOI: 10.32082/fp.v0i3(59).265. Disponível em: https://journals.law.uj.edu.pl/forum_prawnicze/article/view/265. Acesso em: 26 oct. 2026.