To cite package ‘RcppTrust’ in publications use:

  Geyer CJ, Fidler M, Powell MJD (2026). _RcppTrust: Thread-Safe C++
  Trust Region Optimizers_. R package version 0.2.0,
  <https://github.com/nlmixr2/rcpptrust>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {RcppTrust: Thread-Safe C++ Trust Region Optimizers},
    author = {Charles J. Geyer and Matthew Fidler and Michael J. D. Powell},
    year = {2026},
    note = {R package version 0.2.0},
    url = {https://github.com/nlmixr2/rcpptrust},
  }