Golowich, Louis, Chiheon Kim, and Richard Zhou. “Maximum Size of a Family of Pairwise Graph-Different Permutations”. The Electronic Journal of Combinatorics 24, no. 4 (October 20, 2017): P4.22. Accessed March 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v24i4p22.