ŁUKOWSKI, P. Logical problems with nonmonotonicity. Logic and Logical Philosophy, [S. l.], v. 23, n. 2, p. 171–188, 2014. DOI: 10.12775/LLP.2014.004. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2014.004. Acesso em: 16 jul. 2024.