To cite mixpower in publications use:

  Litovchenko A (2026). _mixpower: Simulation-Based Power Analysis for
  Mixed-Effects Models_. R package version 1.1.1,
  <https://github.com/alitovchenko/mixpower>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mixpower: Simulation-Based Power Analysis for Mixed-Effects Models},
    author = {Alex Litovchenko},
    year = {2026},
    note = {R package version 1.1.1},
    url = {https://github.com/alitovchenko/mixpower},
  }