Öner, G., T. Öner, and İ. Şentürk. “Properties of the Logical Consequence Operation and Its Relationship With the Independence of Propositional Logic”. Ukrains’kyi Matematychnyi Zhurnal 70, no. 6 (June 25, 2018): 857–864. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/1600.