To cite package ‘psqn’ in publications use:

Christoffersen B (2024). psqn: Partially Separable Quasi-Newton. R package version 0.3.2, https://CRAN.R-project.org/package=psqn.

Corresponding BibTeX entry:

  @Manual{,
    title = {psqn: Partially Separable Quasi-Newton},
    author = {Benjamin Christoffersen},
    year = {2024},
    note = {R package version 0.3.2},
    url = {https://CRAN.R-project.org/package=psqn},
  }