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A multi-division efficiency evaluation of U.S. electric power companies using a weighted slacks-based measure
Tsutsui, Miki, (2009)
Comparison of Productive and Cost Efficiencies Among Japanese and US Electric Utilities
Goto, Mika, (1998)
Technical efficiency and impacts of deregulation: An analysis of three functions in U.S. electric power utilities during the period from 1992 through 2000
Goto, Mika, (2008)