7NERLOVE M. Returns to Scale in Electricity Supply [C ]. Measurement in Ecomomics: Studies in Mathematical Economics and Econometrics in Memory of Yehuda Grunfeld, Stanford:Stanford University Press,1963:167-198.
8CHRISTENSEN L R, GREENE W. Economies of Scale in US Electric Power Generation[J]. Journal of Political Economy, 1976(84) : 655-676.
9KRAUTMANN A C, Solow J L. Economies of Scale in Nuclear Power Generation[J]. Southern Economic Journal, 1988(55):70-85.
10KUMBHAKAR S C. Estimation of Cost Efficiency with Heteroscedasticity: An Application to Electricity Utilities [J]. The Statistician, 1996 (45):319-335.
