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Does matching overcome LaLonde's critique of nonexperimental estimators?
Smith, Jeffrey A., (2005)
Endogenous stratification in randomized experiments
Abadie, Alberto, (2013)
Abadie, Alberto, (2018)
Characterizing selection bias using experimental data
Heckman, James J., (1998)
Reconciling conflicting evidence on the performance of propensity-score matching methods
Smith, Jeffrey A., (2001)