ERTOLA, R. On univocal connectives. Logic and Logical Philosophy, [S. l.], v. 18, n. 1, p. 5–13, 2009. DOI: 10.12775/LLP.2009.001. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2009.001. Acesso em: 25 jul. 2024.