GRYKIEL, Jarosław. The key institutions regulated in book one (the General part) of the Polish Civil Code. Pravovedenie, [S. l.], v. 65, n. 1, p. 22–45, 2021. DOI: 10.21638/spbu25.2021.102. Disponível em: https://pravovedenie.spbu.ru/article/view/13312. Acesso em: 15 jan. 2025.