To cite package ‘hts’ in publications use:

  Hyndman R, Lee A, Wang E, Wickramasuriya S (2024). _hts: Hierarchical
  and Grouped Time Series_. R package version 6.0.3,
  <https://github.com/earowang/hts>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {hts: Hierarchical and Grouped Time Series},
    author = {Rob Hyndman and Alan Lee and Earo Wang and Shanika Wickramasuriya},
    year = {2024},
    note = {R package version 6.0.3},
    url = {https://github.com/earowang/hts},
  }