To cite package ‘GrpString’ in publications use:

Tang H, Pienta NJ (2026). GrpString: String Patterns and Statistical Differences Between Two Groups of Strings. R package version 0.5.1, https://CRAN.R-project.org/package=GrpString.

Corresponding BibTeX entry:

  @Manual{,
    title = {GrpString: String Patterns and Statistical Differences
      Between Two Groups of Strings},
    author = {Hui Tang and Norbert J. Pienta},
    year = {2026},
    note = {R package version 0.5.1},
    url = {https://CRAN.R-project.org/package=GrpString},
  }