To cite package ‘MMEFM’ in publications use:

  Liu K (2026). _MMEFM: Multilevel Main Effects Matrix Factor Model
  Tools_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=MMEFM>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {MMEFM: Multilevel Main Effects Matrix Factor Model Tools},
    author = {Kaixin Liu},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=MMEFM},
  }