Bóna, Miklós, Stoyan Dimitrov, Gilbert Labelle, Yifei Li, Joseph Pappe, Andrés R. Vindas-Meléndez, and Yan Zhuang. 2025. “A Combinatorial Proof of a Symmetry for a Refinement of the Narayana Numbers”. The Electronic Journal of Combinatorics 32 (2), P2.46. https://doi.org/10.37236/12681.