To cite package ‘Upsilon’ in publications use:

  Luo X, Song J (2026). _Upsilon: Another Test of Association for Count
  Data_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=Upsilon>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Upsilon: Another Test of Association for Count Data},
    author = {Xuye Luo and Joe Song},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=Upsilon},
  }