Authors: Lan Xiao¹ luky_liu@sohu.com, Yan Liu¹

Superior Title: Southeast Asian Bulletin of Mathematics. 2007, Vol. 31 Issue 5, p1019-1026. 8p.

Subject Terms: *GRAPH theory, *ALGEBRA, *COMBINATORICS, *TOPOLOGY, *MATHEMATICS

Authors: Zaw Win¹ thanzawn@gmail.com, Cho Kyi Than¹ mathyu@dhehn-edu.gov.mm

Superior Title: Southeast Asian Bulletin of Mathematics. 2009, Vol. 33 Issue 5, p969-976. 8p.

Subject Terms: *TREE graphs, *MATHEMATICAL proofs, *ALGORITHMS, *VERTEX operator algebras, *GRAPH theory