To cite package ‘fjohansen’ in publications use:

Roudane M (2026). fjohansen: Johansen Cointegration Test with Fourier-Type Smooth Nonlinear Trends. R package version 0.1.0, https://CRAN.R-project.org/package=fjohansen.

Corresponding BibTeX entry:

  @Manual{,
    title = {fjohansen: Johansen Cointegration Test with Fourier-Type
      Smooth Nonlinear Trends},
    author = {Merwan Roudane},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=fjohansen},
  }