Yamada Y, T Matsui and M Sugiyama (1994). “An Inefficiency Measurement Method for Management-Systems.” J Oper Res Soc JPN 3: 158-168.

Yamada Y, T Matsui and M Sugiyama (1994). “An Inefficiency Measurement Method for Management-Systems.” J Oper Res Soc JPN 3: 158-168.

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