To cite package ‘gicf’ in publications use:

  Cibinel L, Roverato A, Vinciotti V (2025). _gicf: Penalised
  Likelihood Estimation of a Covariance Matrix_. R package version
  1.0.1, <https://CRAN.R-project.org/package=gicf>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gicf: Penalised Likelihood Estimation of a Covariance Matrix},
    author = {Luca Cibinel and Alberto Roverato and Veronica Vinciotti},
    year = {2025},
    note = {R package version 1.0.1},
    url = {https://CRAN.R-project.org/package=gicf},
  }