Öner, G., T. Öner, and İ. Şentürk. 2018. “Properties of the Logical Consequence Operation and its relationship With the Independence of Propositional Logic”. Ukrains’kyi Matematychnyi Zhurnal 70 (6), 857-64. https://umj.imath.kiev.ua/index.php/umj/article/view/1600.