Hixon G, Thompson C and Bichteler A (2015). drsmooth: Dose-Response Modeling with Smoothing Splines. R package version 1.9.0, https://CRAN.R-project.org/package=drsmooth.

Corresponding BibTeX entry:

  @Manual{,
    title = {{drsmooth}: Dose-Response Modeling with Smoothing
      Splines},
    author = {Greg Hixon and Chad Thompson and Anne Bichteler},
    year = {2015},
    note = {R package version 1.9.0},
    url = {https://CRAN.R-project.org/package=drsmooth},
  }