Assumptions allowing the estimation of direct causal effects
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- Manski, Charles F, 1990.
"Nonparametric Bounds on Treatment Effects,"
American Economic Review,
American Economic Association, vol. 80(2), pages 319-23, May.
- Pratt, John W. & Schlaifer, Robert, 1988. "On the interpretation and observation of laws," Journal of Econometrics, Elsevier, vol. 39(1-2), pages 23-52.
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