KACHI, D. Bourne on future contingents and three-valued logic. Logic and Logical Philosophy, [S. l.], v. 18, n. 1, p. 33–43, 2009. DOI: 10.12775/LLP.2009.003. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2009.003. Acesso em: 20 apr. 2024.