Ma, Jun, Shi-Mei Ma, Yeong-Nan Yeh, and Xu Zhu. “The Cycle Descent Statistic on Permutations”. The Electronic Journal of Combinatorics 23, no. 4 (November 10, 2016): P4.20. Accessed March 15, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v23i4p20.