O157.5
This paper propored a concept of cap- tassels graph and illustrated that M(2m+ 1,t,G) is harmonious when n=2m+ 1 and G is strong harmonious.
周玉琴 彭太华.帽挂图的调和性[J].土木与环境工程学报(中英文),1996,18(3):93~97