On the characterization of path graphs. - Huaien Li; Yixun Lin (J. Graph Theory, 1993)

On maximal energy ordering of acyclic conjugated molecules. - Fuji Zhang; Huaien Li (Discrete Mathematical Chemistry, 1998)

Enumerations of Unlabelled Multigraphs. - Huaien Li; David C. Torney (Ars Comb., 2005)