Önden, Abdullah, and İsmail Önden. “Reasoning About the Non-Existent in Large Language Models: Benchmark Success, Negation Failure, and Exploratory Creativity”. Argumentation Based Systems Journal 2 (March 27, 2026): 193–207. Accessed April 15, 2026. https://absj.org/index.php/absj/article/view/229.