Sueyoshi, Toshiyuki Measuring Efficiencies and Returns to Scale of Nippon Telegraph & Telephone in Production and Cost Analyses,
, 1997, pp. 779 - 796.
Sueyoshi, Toshiyuki .
Measuring Efficiencies and Returns to Scale of Nippon Telegraph & Telephone in Production and Cost Analyses.
: , 1997, pp. 779 - 796.
Sueyoshi, Toshiyuki (1997)
Measuring Efficiencies and Returns to Scale of Nippon Telegraph & Telephone in Production and Cost Analyses,
: , pp. 779 - 796
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