Fujita, Etsushi, Julien Lesca, Akihisa Sonoda, Taiki Todo, and Makoto Yokoo. “A Complexity Approach for Core-Selecting Exchange With Multiple Indivisible Goods under Lexicographic Preferences”. Proceedings of the AAAI Conference on Artificial Intelligence 29, no. 1 (February 16, 2015). Accessed August 10, 2022. https://ojs.aaai.org/index.php/AAAI/article/view/9318.