Blasio, Carolina, João Marcos, and Heinrich Wansing. “An Inferentially Many-Valued Two-Dimensional Notion of Entailment”. Bulletin of the Section of Logic 46, no. 3/4 (December 30, 2017): 233–262. Accessed May 2, 2024. https://czasopisma.uni.lodz.pl/bulletin/article/view/3257.