To cite package ‘birtRcpp’ in publications use:

  Tsai J (2026). _birtRcpp: BIvariate Response Time Modeling with
  'Rcpp'_. R package version 0.3.0,
  <https://github.com/jiewentsai/birtrcpp>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {birtRcpp: BIvariate Response Time Modeling with 'Rcpp'},
    author = {Jie-Wen Tsai},
    year = {2026},
    note = {R package version 0.3.0},
    url = {https://github.com/jiewentsai/birtrcpp},
  }