To cite package ‘trust’ in publications use:

Geyer CJ (2026). trust: Trust Region Optimization. R package version 0.1-9, https://CRAN.R-project.org/package=trust.

Corresponding BibTeX entry:

  @Manual{,
    title = {trust: Trust Region Optimization},
    author = {Charles J. Geyer},
    year = {2026},
    note = {R package version 0.1-9},
    url = {https://CRAN.R-project.org/package=trust},
  }