Sueyoshi T, F Ito, T Hasebe, J Sakai and W Ozawa (1998). ?DEA-Bilateral Performance Comparison: An Application to Japan.” Omega 26(2): 233.

Sueyoshi T, F Ito, T Hasebe, J Sakai and W Ozawa (1998). ?DEA-Bilateral Performance Comparison: An Application to Japan.” Omega 26(2): 233.

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