@techreport{weko_474_1,
   author	 = "TONE,Kaoru and TSUTSUI,Miki",
   title	 = "Decomposition of Cost Efficiency and its Application to Japan-US Electric Utilities Comparisons",
   year 	 = "2004",
   institution	 = "政策研究大学院大学 / National Graduate Institute for Policy Studies, Central Research Institute of Electric Power Industry",
   month	 = "nov"
}