To cite package ‘fNonlinear’ in publications use:

  Wuertz D, Setz T, Chalabi Y (2026). _fNonlinear: Rmetrics - Nonlinear
  and Chaotic Time Series Modelling_. R package version 4052.83,
  <https://r-forge.r-project.org/projects/rmetrics>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fNonlinear: Rmetrics - Nonlinear and Chaotic Time Series Modelling},
    author = {Diethelm Wuertz and Tobias Setz and Yohan Chalabi},
    year = {2026},
    note = {R package version 4052.83},
    url = {https://r-forge.r-project.org/projects/rmetrics},
  }