To cite the gratis package in publications, please use:

  Kang Y, Li F, Hyndman RJ, O'Hara-Wild M, Zhao B (2024). _gratis: An R
  package for GeneRAting TIme Series with diverse and controllable
  characteristics_. R package version 1.0.7,
  <https://github.com/ykang/gratis>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{gratis}: An R package for {GeneRAting TIme Series} with diverse and controllable characteristics},
    author = {Yanfei Kang and Feng Li and Rob J Hyndman and Mitchell O'Hara-Wild and Bocong Zhao},
    year = {2024},
    note = {R package version 1.0.7},
    url = {https://github.com/ykang/gratis},
  }

  Kang Y, Hyndman RJ, Li F (2020). “GRATIS: GeneRAting TIme Series with
  diverse and controllable characteristics.” _Statistical Analysis and
  Data Mining_, *13*(4), 354-376. doi:10.1002/sam.11461
  <https://doi.org/10.1002/sam.11461>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{GRATIS}: {GeneRAting TIme Series} with diverse and controllable characteristics},
    author = {Yanfei Kang and Rob J Hyndman and Feng Li},
    journal = {Statistical Analysis and Data Mining},
    year = {2020},
    volume = {13},
    number = {4},
    pages = {354--376},
    doi = {10.1002/sam.11461},
  }