Cook WD, A Kazakov and Y Roll (1990). “On the Measurement of the Relative Efficiency of a Set of Decision-Making Units.” in Kweiermair M (eds.) Studies in Economic Rationality: X-Efficiency Examined and Extolledes Says Written in the Tradition: 351-368.

Cook WD, A Kazakov and Y Roll (1990). “On the Measurement of the Relative Efficiency of a Set of Decision-Making Units.” in Kweiermair M (eds.) Studies in Economic Rationality: X-Efficiency Examined and Extolledes Says Written in the Tradition: 351-368.

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