Counting subrings of Zn of index k. - Ricky Ini Liu (J. Comb. Theory A, 2007)

Nonconvexity of the Set of Hypergraph Degree Sequences. - Ricky Ini Liu (Electron. J. Comb., 2013)

Laurent polynomials, Eulerian numbers, and Bernstein's theorem. - Ricky Ini Liu (J. Comb. Theory A, 2014)

On the commutative quotient of Fomin-Kirillov algebras. - Ricky Ini Liu (Eur. J. Comb., 2016)

Kronecker coefficients and noncommutative super Schur functions. - Jonah Blasiak; Ricky Ini Liu (J. Comb. Theory A, 2018)

Gelfand-Tsetlin Polytopes: A Story of Flow and Order Polytopes. - Ricky Ini Liu; Karola Mészáros; Avery St. Dizier (SIAM J. Discret. Math., 2019)

The algebra of Schur operators. - Ricky Ini Liu; Christian Smith (Eur. J. Comb., 2020)

P-partition generating function equivalence of naturally labeled posets. - Ricky Ini Liu; Michael Weselcouch (J. Comb. Theory A, 2020)

Channels, Billiards, and Perfect Matching 2-Divisibility. - Grant T. Barkley; Ricky Ini Liu (Electron. J. Comb., 2021)

Up- and Down-Operators on Young's Lattice. - Ricky Ini Liu; Christian Smith (Electron. J. Comb., 2021)

Schubert polynomials as projections of Minkowski sums of Gelfand-Tsetlin polytopes. - Ricky Ini Liu; Karola Mészáros; Avery St. Dizier (Comb. Theory, 2022)