January 1980
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311 Reads
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13,036 Citations
Econometrica
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January 1980
·
311 Reads
·
13,036 Citations
Econometrica
... For inference, we used robust standard errors to account for potential heteroskedasticity (White, 1980) in equations (4)-(5) and the return to scale. As shown in Appendices, we check robustness of results from exploring combinations of covariates in both equations. ...
January 1980
Econometrica