A Comparison of Costs in Privately Owned and Publicly Owned Electric Utilities: The Role of Scale
比较私有和公有电力公司的成本，发现规模是影响成本差异的关键因素，对理解不同所有制效率有参考价值。
Dong-Soo Koh, Sanford V. Berg, Lawrence W. Kenny, A Comparison of Costs in Privately Owned and Publicly Owned Electric Utilities: The Role of Scale, Land Economics, Vol. 72, No. 1 (Feb., 1996), pp. 56-65