Obraztsova, Svetlana, Edith Elkind, and Piotr Faliszewski. “On Swap Convexity of Voting Rules”. Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 02 (April 3, 2020): 1910-1917. Accessed August 12, 2022. https://ojs.aaai.org/index.php/AAAI/article/view/5560.