To cite package ‘rsurface’ in publications use:

Schwinghamer T, Pierre D (2018). rsurface: Design of Rotatable Central Composite Experiments and Response Surface Analysis. R package version 1.1.0, https://CRAN.R-project.org/package=rsurface.

Corresponding BibTeX entry:

  @Manual{,
    title = {rsurface: Design of Rotatable Central Composite
      Experiments and Response Surface Analysis},
    author = {Timothy Schwinghamer and Dutilleul Pierre},
    year = {2018},
    note = {R package version 1.1.0},
    url = {https://CRAN.R-project.org/package=rsurface},
  }