IVLEV, Y. V. Quasi-matrix logic as a paraconsistent logic for dubitable information. Logic and Logical Philosophy, [S. l.], v. 8, n. 8, p. 91–97, 2004. DOI: 10.12775/LLP.2000.006. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2000.006. Acesso em: 25 apr. 2024.