To cite package ‘complex’ in publications use:

  Svetunkov I (2026). _complex: Time Series Analysis and Forecasting
  Using Complex Variables_. R package version 1.0.3,
  <https://github.com/openforecast-org/complex>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {complex: Time Series Analysis and Forecasting Using Complex Variables},
    author = {Ivan Svetunkov},
    year = {2026},
    note = {R package version 1.0.3},
    url = {https://github.com/openforecast-org/complex},
  }