A rank of partitions with overline designated summands. - Robert X. J. Hao; Erin Y. Y. Shen; Wenston J. T. Zang (Discret. Math., 2021)

Combinatorial proofs of the Ramanujan type congruences modulo 3. - Robert X. J. Hao (Discret. Math., 2022)

Lattice paths and the Rogers-Ramanujan-Gordon type theorems with parity considerations. - Robert X. J. Hao; Diane Y. H. Shi (Adv. Appl. Math., 2025)