Kruger JJ (2003). “The Global Trends of Total Factor Productivity: Evidence from the Nonparametric Malmquist Index Approach.” Oxford Economic Papers 55(2): 265-286.

Kruger JJ (2003). “The Global Trends of Total Factor Productivity: Evidence from the Nonparametric Malmquist Index Approach.” Oxford Economic Papers 55(2): 265-286.

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