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Combinatorics

Xiaofeng Guo, Yi Huang, A combinatorial theorem on ordered circular sequences of n1 u’s and n2 v’s with application to kernel-perfect graphs, Acta Mathematicae Applicatae Sinica (English Series) 19 (2003) 41-46.

Xiaofeng Guo, M. Randic, Recursive Formulae for Enumeration of LM-Conjugated Circuits in Structurally Related Benzenoid Hydrocarbons, J. Mathematical Chemistry 30 (2002) 325-342.

Fuji Zhang, Xuerong Yong, Asymptotic enumeration theorems for the numbers of spanning trees and Eulerian trails in circulant digraphs and graphs, Sci. China Ser. A, 42 (1999) 264-271.

Fuji Zhang, Xiaofeng Guo, The Enumeration of Several Classes of Hexagonal Systems, Acta Mathematicae Applicatae Sinica 15 (1999) 65-71.

Fuji Zhang, Huaien Li, Guoning Lin, The enumeration of heterofullerenes, J. Mol. Struct. (Theochem) 453(1998)1-6.

Fuji Zhang, Heping Zhang, A note on the number of perfect matchings of bipartite graphs, Discrete Appl. Math. 73 (1997) 275-282.

Huaxiao Zhang, Fuji Zhang, Qiongxiang Huang, On the number of spanning trees and Eulerian tours in iterated line digraphs, Discrete Appl. Math. 73 (1997)1:59-67.

Fuji Zhang, Heping Zhang, A new enumeration method for Kekule structures of hexagonal systems with forcing edges, J. Mol. Struct. (Theochem) (1995)331:255-260.

Xiaofeng Guo, Fuji Zhang, J.Brunvoll, B.N.Cyvin, S.J. Cyvin, Concealed Non-Kekulean Benzenoids, J. Chem. Inf. Comput. Sci. 35 (1995) 226-232.

Fuji Zhang, Xiaofeng Guo, S.J.Cyvin and B.N.Cyvin, The Enumeration of Catafusenes Rooted at a Polygon Core II, J.Mol. Struc. (Theochem) 313 (1994) 351-356.

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