BÓNA, M.; DIMITROV, S.; LABELLE, G.; LI, Y.; PAPPE, J.; VINDAS-MELÉNDEZ, A. R.; ZHUANG, Y. A Combinatorial Proof of a Symmetry for a Refinement of the Narayana Numbers. The Electronic Journal of Combinatorics, v. 32, n. 2, p. P2.46, 6 Jun. 2025.