Charnes A, WW Cooper, LM Seiford and J Stutz (1982). “A Multiplicative Model for Efficiency Analysis.” Socio-Econ Plan Sci 1: 223-224.

Charnes A, WW Cooper, LM Seiford and J Stutz (1982). “A Multiplicative Model for Efficiency Analysis.” Socio-Econ Plan Sci 1: 223-224.

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