Sueyoshi T (1999). ?DEA Duality on Returns to Scale (Rts) in Production and Cost Analyses: An Occurrence of Multiple Solutions and Differences between Production-Based and Cost-Based Rts Estimates.” Management Science 45(11): 1593-1608.

Sueyoshi T (1999). ?DEA Duality on Returns to Scale (Rts) in Production and Cost Analyses: An Occurrence of Multiple Solutions and Differences between Production-Based and Cost-Based Rts Estimates.” Management Science 45(11): 1593-1608.

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