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Subal C. Kumbhakar, On the Estimation of Technical and Allocative Inefficiency Using Stochastic Frontier Functions: The Case of U.S. Class 1 Railroads, International Economic Review, Vol. 29, No. 4 (Nov., 1988), pp. 727-743
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Papers that cite the same references — the relational fallback while embeddings are still backfilling.
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