To cite package ‘FactorHet’ in publications use:

  Goplerud M, Pashley NE, Imai K (2025). _FactorHet: Estimate
  Heterogeneous Effects in Factorial Experiments Using Grouping and
  Sparsity_. R package version 1.0.0,
  <https://github.com/mgoplerud/factorhet>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {FactorHet: Estimate Heterogeneous Effects in Factorial Experiments Using
Grouping and Sparsity},
    author = {Max Goplerud and Nicole E. Pashley and Kosuke Imai},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://github.com/mgoplerud/factorhet},
  }