To cite expertsurv in publications use:

Cooney P, White A (2023). expertsurv: Incorporate Expert Opinion with Parametric Survival Models. R package version 1.3.0.

Philp Cooney, Arthur White (2023). Direct Incorporation of Expert Opinion into Parametric Survival Models to Inform Survival Extrapolation Medical Decision Making, 1-12. URL https://journals.sagepub.com/doi/epub/10.1177/0272989X221150212

Corresponding BibTeX entries:

  @Manual{expertsurv-package,
    title = {expertsurv: Incorporate Expert Opinion with Parametric
      Survival Models},
    author = {Philip Cooney and Arthur White},
    year = {2023},
    note = {R package version 1.3.0},
  }

  @Article{,
    title = {Direct Incorporation of Expert Opinion into Parametric
      Survival Models to Inform Survival Extrapolation},
    author = {Philip Cooney and Arthur White},
    journal = {Medical Decision Making},
    year = {2023},
    pages = {1--12},
    url =
      {https://journals.sagepub.com/doi/epub/10.1177/0272989X221150212},
  }