To cite package ‘HOIF’ in publications use:

  Chen X, Liu L (2026). _HOIF: Higher-Order Influence Function
  Estimators for the Average Treatment Effect_. R package version
  0.2.0, <https://CRAN.R-project.org/package=HOIF>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {HOIF: Higher-Order Influence Function Estimators for the Average
Treatment Effect},
    author = {Xingyu Chen and Lin Liu},
    year = {2026},
    note = {R package version 0.2.0},
    url = {https://CRAN.R-project.org/package=HOIF},
  }