INDRZEJCZAK, A. Fregean Description Theory in Proof-Theoretical Setting. Logic and Logical Philosophy, [S. l.], v. 28, n. 1, p. 137–155, 2018. DOI: 10.12775/LLP.2018.008. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2018.008. Acesso em: 24 apr. 2024.