Schulz, Katrin. “The Similarity Approach Strikes Back: Negation in Counterfactuals”. Proceedings of Sinn und Bedeutung 22, no. 2 (May 17, 2019): 343-360. Accessed September 21, 2021. https://ojs.ub.uni-konstanz.de/sub/index.php/sub/article/view/110.