To cite package ‘hystar’ in publications use:

de Jong D (2023). hystar: Fit the Hysteretic Threshold Autoregressive Model. R package version 1.2.1, https://github.com/daandejongen/hystar.

Corresponding BibTeX entry:

  @Manual{,
    title = {hystar: Fit the Hysteretic Threshold Autoregressive
      Model},
    author = {Daan {de Jong}},
    year = {2023},
    note = {R package version 1.2.1},
    url = {https://github.com/daandejongen/hystar},
  }