3Hochberg,Y.,and A. C. Tamhane,1987,Muhiple Com- parison Procedures. Hoboken,NJ:John Wiley & Sons.
4Liu,Y.,Zhao,X. and Liao,Y.,2013, "Market Structure, Ownership Structure, and Performance of China's Con- struction Industry". Journal of Construction Engineering & Management. Vol. 139 Issue 7,pp852-857.
5Milliken,G. A.,and D. E. Johnson ,1992 , Analysis of Messy Data,Volume l:Designed Experiments. Boca Ra- ton, FL: Chapman & HalI/CRC Press.
6Searle,S. R.,F. M. Speed,and G. A. Milliken,1980, "Population marginal means in the linear model :an alter- native to least-squares means". American Statistician. pp216-221.
