On optimal orientations of complete tripartite graphs. - H. W. Willie Wong; Eng Guan Tay (Australas. J Comb., 2021)

Analogues of Katona's and Milner's theorems for two families. - Peter Frankl; H. W. Willie Wong (Discret. Math., 2021)

Optimal orientations of vertex-multiplications of Cartesian products of graphs. - H. W. Willie Wong; Eng Guan Tay (Australas. J Comb., 2022)

Kruskal-Katona function and variants of cross-intersecting antichains. - H. W. Willie Wong; Eng Guan Tay (Discret. Math., 2022)

Arc reversals of cycles in orientations of G vertex-multiplications. - H. W. Willie Wong; Eng Guan Tay (Discret. Math., 2022)

Tournament completions of bipartite tournaments and their augmented directed cycles. - H. W. Willie Wong (Discret. Math., 2024)