To cite package ‘nilsier’ in publications use:

  Prentius W (2025). _nilsier: Design-Based Estimators for NILS_. R
  package version 0.1.1, <https://github.com/envisim/nilsier>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {nilsier: Design-Based Estimators for NILS},
    author = {Wilmer Prentius},
    year = {2025},
    note = {R package version 0.1.1},
    url = {https://github.com/envisim/nilsier},
  }