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Combinatorics

Weigen Yan , Yeong-Nan Yeh, On the number of matchings of graphs formed by a graph operation, Science in China: Series A Mathematics, 49(2006), 1383-1391.

Weigen Yan, Yeong-Nan Yeh, Enumeration of subtrees of trees, Theoretical Computer Science, 369(2006), 256-268.

Weigen Yan, Fuji Zhang, Graphical condensation for enumerating perfect matchings, Journal of Combinatorial Theory Ser. A, 110(2005) 113-125.

Mihai Ciucu, Weigen Yan, and Fuji Zhang, The number of spanning trees of plane graphs with reflective symmetry, Journal of Combinatorial Theory Ser.A, 112(2005) 105-116.

Weigen Yan, Yeong-Nan Yeh, and Fuji Zhang, Graphical condensation of plane graphs: a combinatorial approach, Theoretical Computer Science, 349(2005) 452-461.

Weigen Yan, Fuji Zhang, Enumeration of perfect matchings of graphs with reflective symmetry by Pfaffians, Advances in Applied Mathematics, 32(2004) 655-668.

Xiebin Chen, Qiuying Lin, Fuji Zhang, The number of spanning trees in odd valent circulant graphs, Discrete Math. 282 (2004) 69-79.

Fuji Zhang, Weigen Yan, Enumeration of perfect matchings in a type of graphs with reflectivel symmetry, Match Commun. Math. Comput. Chem. 48(2003) 117-124.

Weigen Yan, Fuji Zhang, On the number of Kekule structures of a type of oblate rectangles, MATCH Commun. Math. Comput. Chem. 47(2003) 141-149.

Weigen Yan, Fuji Zhang, Heredity of the index of convergence of the line digraph, Discrete Applied Mathematics, 131(2003), 681-688.

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