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Our data says that the document:
Guido M., Imbens ; Jeffrey, Wooldridge ; Guido, Imbens. (2008) Recent Developments in the Econometrics of Program Evaluation.
In: NBER Working Papers. RePEc:nbr:nberwo:14251.
Full description at Econpapers
cites:
Rubin, D., and N. Thomas, (1996), “Matching Using Estimated Propensity Scores,”Biometrics 52 249-264.
but, as far as we know, such cited document is not available on RePEc.
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