To cite package ‘duckh3’ in publications use:

  Cidre González A, Kotov E, Pereira R (2026). _duckh3: H3 Extension of
  'DuckDB'_. R package version 0.1.0,
  <https://github.com/cidree/duckh3>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {duckh3: H3 Extension of 'DuckDB'},
    author = {Adrián {Cidre González} and Egor Kotov and Rafael H. M. Pereira},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/cidree/duckh3},
  }