OMORI, H.; WARAGAI, T. On Béziau’s logic Z. Logic and Logical Philosophy, [S. l.], v. 17, n. 4, p. 305–320, 2009. DOI: 10.12775/LLP.2008.017. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2008.017. Acesso em: 11 dec. 2023.