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Two-step estimation, optimal moment conditions, and sample selection models
Newey, Whitney K., (1998)
Two-step series estimation of sample selection models
Newey, Whitney K., (1999)
Efficiency bounds for semiparametric regression
Chamberlain, Gary, (1990)
Instrumental variables estimation with flexible distributions
Hansen, Christian Bailey, (2007)
Conditional moment restrictions in censored and truncated regression models
Flexible simulated moment estimation of nonlinear errors-in-variables models