Dirac's theorem on chordal graphs and Alexander duality. - Jürgen Herzog; Takayuki Hibi; Xinxian Zheng (Eur. J. Comb., 2004)

Cohen-Macaulay chordal graphs. - Jürgen Herzog; Takayuki Hibi; Xinxian Zheng (J. Comb. Theory A, 2006)

Kruskal-Katona type theorems for clique complexes arising from chordal and strongly chordal graphs. - Jürgen Herzog; Satoshi Murai; Xinxian Zheng; Takayuki Hibi; Ngô Viêt Trung (Comb., 2008)

Ideals with linear quotients. - Ali Soleyman Jahan; Xinxian Zheng (J. Comb. Theory A, 2010)