st: Semiparametric SLS Ichimura

[ncdcta00@uniroma2.it]

Dear statilist,

do you know if in Stata is implement Ichimura's Semi-parametric Least  
Squares (SLS) from Ichimura (1993): "Semiparametric Least Squares  
(SLS) and Weighted SLS Estimation of Single-Index Models," Journal of  
Econometrics?
I want to estimate the quantile regression  correct for selection, the  
same approach of Buchinsky( Buchynsky: The dynamic of changes in the  
female wage distribution in the usa: a quantile regression approch JAE  
1998).
Could you give me some information?
Thank you very much in advance.

Sincerely
Catia

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