Aigner, Florian. “Fully Packed Loop Configurations: Polynomiality and Nested Arches”. The Electronic Journal of Combinatorics 25, no. 1 (February 16, 2018): #P1.27. Accessed May 15, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v25i1p27.