To cite package ‘EFM’ in publications use:

Guo G, Zhou Y (2025). EFM: Elliptical Factor Models. R package version 1.3.0, https://CRAN.R-project.org/package=EFM.

Corresponding BibTeX entry:

  @Manual{,
    title = {EFM: Elliptical Factor Models},
    author = {Guangbao Guo and Yuanyuan Zhou},
    year = {2025},
    note = {R package version 1.3.0},
    url = {https://CRAN.R-project.org/package=EFM},
  }