ÖNER, G.; ÖNER, T.; ŞENTÜRK, İ. Properties of the logical consequence operation and its relationship with the independence of propositional logic. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 70, n. 6, p. 857–864, 2018. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1600. Acesso em: 5 dec. 2025.