citEntry(
  entry="Article",
  title="Estimation of a Regression Spline Sample Selection Model",
  journal="Computational Statistics and Data Analysis",
  volume= "61",
  pages="158-173",
  number="",
  year="2013", 
  author="Marra G. and Radice R.",
  textVersion="Marra G. and Radice R. (2013), Estimation of a Regression Spline Sample Selection Model, Computational Statistics and Data Analysis, 61, 158-173."
 )

citEntry(entry = "Article",
  title        = "Copula Regression Spline Sample Selection Models: The {R} Package {SemiParSampleSel}",
  author       = c(person(given = "Ma{\\l}gorzata",
                          family = "Wojty{\\'s}",
                          email = "malgorzata.wojtys@plymouth.ac.uk"),
                   person(given = "Giampiero",
                          family = "Marra",
                          email = "giampiero.marra@ucl.ac.uk"),
                   person(given = "Rosalba",
                          family = "Radice",
                          email = "r.radice@bbk.ac.uk")),
  journal      = "Journal of Statistical Software",
  year         = "2016",
  volume       = "71",
  number       = "6",
  pages        = "1--65",
  doi          = "10.18637/jss.v071.i06",

  header       = "To cite SemiParSampleSel in publications use:",
  textVersion  =
  paste("Malgorzata Wojtys, Giampiero Marra, Rosalba Radice (2016).",
        "Copula Regression Spline Sample Selection Models: The R Package SemiParSampleSel.",
        "Journal of Statistical Software, 71(6), 1-65.",
        "doi:10.18637/jss.v071.i06")
) 
