desc <- packageDescription("SemiParSampleSel")
year <- sub(".*(2[[:digit:]]{3})-.*", "\\1", desc$Date)
vers <- paste(" R package version", desc$Version)

citEntry(entry="Manual",
title = "SemiParSampleSel: Semiparametric Sample Selection Modelling with Continuous Response",
author = "Marra G., Radice R. and Wojtys M.",
year = year,
note = vers,
textVersion =
paste("Marra G., Radice R. and Wojtys M. (",year,"). SemiParSampleSel: Semiparametric Sample Selection Modelling with Continuous Response.",vers, ".", sep="")
)


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."
 )
