Berman, Yosef, and Bridget Eileen Tenner. “Pattern-Functions, Statistics, and Shallow Permutations”. The Electronic Journal of Combinatorics 29, no. 4 (December 16, 2022): P4.43. Accessed March 17, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v29i4p43.