To cite package ‘RPIV’ in publications use:

  Scheidegger C (2026). _RPIV: Residual Prediction Tests for
  Well-Specification of Instrumental Variable Models_. R package
  version 1.1.0, <https://github.com/cyrillsch/rpiv>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {RPIV: Residual Prediction Tests for Well-Specification of Instrumental
Variable Models},
    author = {Cyrill Scheidegger},
    year = {2026},
    note = {R package version 1.1.0},
    url = {https://github.com/cyrillsch/rpiv},
  }