4Fried H O, Lovell C A K, Schmidt S S, et al. Accounting for environmental effects and statistical noise in data envelopment analysis [J]. Journal of Productivity Analysis, 2002, 17(1-2): 157- 174.
5Simar L, Wilson R P W. Sensitivity analysis of efficiency scores: How to bootstrap in nonparametric frontier models [J]. Management Science, 1998, 44(1): 49-61.
6Banker R D, Charnes A, Cooper W W. Some models for estimating technical and scale inefficiencies in data envelopment analysis [J]. Management Science, 1984, 30(9): 1078-1092.
7United Nations Conference on Trade and Development. In- tegrating Environmental and Financial Performance at the Enterprise level: A methotolo for standardizing co-effie- ieney Indicators [ M ]. New York : United Nations, 2003 : 29- 30.
8Lauwers L. Justifying the incorporation of the materials balance principle into frontier- based eco- efficiency mod- els [ J ]. Ecological Economics, 2009,68 (6) : 1605-1614.
9Korhonen P J, Luptacik M. Eco- efficiency analysis of power plants: an extension of data envelopment analysis [J]. European Journal of Operational Research, 2004, 154 (2) :437-446.
