To cite package ‘formulaiv’ in publications use:

Sheng P (2026). formulaiv: Sensitivity of Formula Instrument to Shock Design. R package version 0.1.0, https://github.com/peizansheng/formulaiv.

Corresponding BibTeX entry:

  @Manual{,
    title = {formulaiv: Sensitivity of Formula Instrument to Shock
      Design},
    author = {Peizan Sheng},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/peizansheng/formulaiv},
  }