KALINOWSKI, M. Making the performance complied with the principles of community law and the natural obligation. Some remarks from the historical point of view. Studia Iuridica Toruniensia, [S. l.], v. 19, p. 77–92, 2017. DOI: 10.12775/SIT.2016.016. Disponível em: https://apcz.umk.pl/SIT/article/view/SIT.2016.016. Acesso em: 12 apr. 2024.