To cite package ‘fmi’ in publications use:

  Kim H (2025). _fmi: Hierarchical Permutation Tests for Functional
  Measurement Invariance_. R package version 0.1.7,
  <https://CRAN.R-project.org/package=fmi>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fmi: Hierarchical Permutation Tests for Functional Measurement
Invariance},
    author = {Hyeri Kim},
    year = {2025},
    note = {R package version 0.1.7},
    url = {https://CRAN.R-project.org/package=fmi},
  }