Wang, Zhe, Kewen Wang, and Xiaowang Zhang. “Forgetting and Unfolding for Existential Rules”. Proceedings of the AAAI Conference on Artificial Intelligence 32, no. 1 (April 25, 2018). Accessed May 26, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/11552.