Eriksen, Niklas, Henrik Eriksson, and Kimmo Eriksson. “Diagonal Checker-Jumping and Eulerian Numbers for Color-Signed Permutations”. The Electronic Journal of Combinatorics 7, no. 1 (January 26, 2000): R3. Accessed March 16, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v7i1r3.