Sandorf ED, Campbell D (2023). spdesign: Designing Stated Preference Experiments. R package version 0.0.4, https://CRAN.R-project.org/package=spdesign.

Corresponding BibTeX entry:

  @Manual{,
    title = {{spdesign: Designing Stated Preference Experiments}},
    author = {Erlend Dancke Sandorf and Danny Campbell},
    year = {2023},
    note = {R package version 0.0.4},
    url = {https://CRAN.R-project.org/package=spdesign},
  }