Kahle, Thomas, and Mateusz Michałek. “Obstructions to Combinatorial Formulas for Plethysm”. The Electronic Journal of Combinatorics 25, no. 1 (March 2, 2018): #P1.41. Accessed May 20, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v25i1p41.