To cite package ‘MixFrac’ in publications use:

  Dash S (2025). _MixFrac: Fractional Factorial Designs with Alias and
  Trend-Free Analysis_. R package version 1.0,
  <https://CRAN.R-project.org/package=MixFrac>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {MixFrac: Fractional Factorial Designs with Alias and Trend-Free Analysis},
    author = {Sukanta Dash},
    year = {2025},
    note = {R package version 1.0},
    url = {https://CRAN.R-project.org/package=MixFrac},
  }