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.