Marra G. and Radice R. (2013), Estimation of a Regression Spline Sample Selection Model, Computational Statistics and Data Analysis, 61, 158-173.

Wojtys M., Marra G. and Radice R. (2016), Copula Regression Spline Sample Selection Models: The R Package SemiParSampleSel, Journal of Statistical Software.

Corresponding BibTeX entries:

  @Article{,
    title = {Estimation of a Regression Spline Sample Selection Model},
    journal = {Computational Statistics and Data Analysis},
    volume = {61},
    pages = {158-173},
    year = {2013},
    author = {Marra G. and Radice R.},
  }
  @Article{,
    title = {Copula Regression Spline Sample Selection Models: The R
      Package SemiParSampleSel},
    journal = {Journal of Statistical Software},
    year = {2016},
    author = {Marra G. and Radice R.},
  }