SAYWARD, C. What is the logic of propositional identity?. Logic and Logical Philosophy, [S. l.], v. 15, n. 1, p. 3–15, 2006. DOI: 10.12775/LLP.2006.001. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2006.001. Acesso em: 4 may. 2024.