A planar network proof for Hankel total positivity of type B Narayana polynomials. - Ethan Y. H. Li; Grace M. X. Li; Arthur L. B. Yang; Candice X. T. Zhang (Adv. Appl. Math., 2022)

Conflict-free chromatic index of trees. - Shanshan Guo; Ethan Y. H. Li; Luyi Li; Ping Li (CoRR, 2024)