Banker RD, H Chang and WW Cooper (2004). “A Simulation Study of DEA and Parametric Frontier Models in the Presence of Heteroscedasticity.” EJOR 153(3): 624-640.

Banker RD, H Chang and WW Cooper (2004). “A Simulation Study of DEA and Parametric Frontier Models in the Presence of Heteroscedasticity.” EJOR 153(3): 624-640.

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