To cite package ‘shard’ in publications use:

  Buchsbaum B (2026). _shard: Deterministic, Zero-Copy Parallel
  Execution for R_. R package version 0.1.0,
  <https://github.com/bbuchsbaum/shard>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {shard: Deterministic, Zero-Copy Parallel Execution for R},
    author = {Bradley Buchsbaum},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/bbuchsbaum/shard},
  }