6Charnes A,Cooper W W,Rhodes E. Measuring the effi-ciency of decision on making units[J].{H}European Journal of Operational Research,1978,(2):429-444.
7Banker R D,Charnes A,Cooper W W. Some Models for Estimating Technical and Scale Inefficiencies in Data En-velopment Analysis[J].{H}Management Science,1984,(9):1078-1092.
8F?re R,Grosskopf S. A nonparametric cost approach to scale efficiency[J].{H}Journal of Economics,1985,(4):594-604.
