The Z-Transformation graph for an outerplane bipartite graph has a Hamilton path. - Heping Zhang; Lingbo Zhao; Haiyuan Yao (Appl. Math. Lett., 2004)

Z-transformation graphs of maximum matchings of plane bipartite graphs. - Heping Zhang; Rijun Zha; Haiyuan Yao (Discret. Appl. Math., 2004)

Z-transformation graphs of perfect matchings of plane bipartite graphs. - Heping Zhang; Fuji Zhang; Haiyuan Yao (Discret. Math., 2004)

A min-max result on outerplane bipartite graphs. - Heping Zhang; Haiyuan Yao; Dewu Yang (Appl. Math. Lett., 2007)

Fibonacci-like cubes as Z-transformation graphs. - Heping Zhang; Lifeng Ou; Haiyuan Yao (Discret. Math., 2009)

Determining which Fibonacci (p, r)-cubes can be Z-transformation graphs. - Lifeng Ou; Heping Zhang; Haiyuan Yao (Discret. Math., 2011)

Decomposition theorem on matchable distributive lattices. - Heping Zhang; Dewu Yang; Haiyuan Yao (Discret. Appl. Math., 2014)

Matching preclusion for cube-connected cycles. - Qiuli Li; Wai Chee Shiu; Haiyuan Yao (Discret. Appl. Math., 2015)

Non-matchable distributive lattices. - Haiyuan Yao; Heping Zhang (Discret. Math., 2015)

Solution to a conjecture on a Nordhaus-Gaddum type result for the Kirchhoff index. - Yujun Yang; Yuliang Cao; Haiyuan Yao; Jing Li (Appl. Math. Comput., 2018)

Structure and enumeration results of matchable Lucas cubes. - Xu Wang; Xuxu Zhao; Haiyuan Yao (Discret. Appl. Math., 2020)