ŁUKOWSKI, Łukasz. Formal and material effectiveness of the performative. Acta Universitatis Lodziensis. Folia Iuridica, Poland, v. 75, p. 191–206, 2015. DOI: 10.18778/0208-6069.75.13. Disponível em: https://www.czasopisma.uni.lodz.pl/Iuridica/article/view/19579. Acesso em: 10 aug. 2026.