DA COSTA, Newton C.A.; CAIERO, Roque da C. k-transforms in classical and paraconsistent logics. Logic and Logical Philosophy, [S. l.], v. 7, n. 7, p. 63–80, 2004. DOI: 10.12775/LLP.1999.005. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.1999.005. Acesso em: 8 jul. 2025.