To cite package ‘rminqa’ in publications use:

  Watson S, Pan Y, Thiébaut É, Powell M (2023). _rminqa:
  Derivative-Free Optimization in R using C++_. R package version
  0.2.2, <https://CRAN.R-project.org/package=rminqa>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rminqa: Derivative-Free Optimization in R using C++},
    author = {Sam Watson and Yi Pan and Éric Thiébaut and Mike Powell},
    year = {2023},
    note = {R package version 0.2.2},
    url = {https://CRAN.R-project.org/package=rminqa},
  }