To cite package ‘FCUSUM’ in publications use:

  Zaghdoudi T (2025). _FCUSUM: Fourier CUSUM Cointegration Test_. R
  package version 1.0.0, <https://github.com/zedtaha/fcusum>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {FCUSUM: Fourier CUSUM Cointegration Test},
    author = {Taha Zaghdoudi},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://github.com/zedtaha/fcusum},
  }