To cite package ‘shard’ in publications use:

  Buchsbaum B (2026). _shard: Deterministic, Zero-Copy Parallel
  Execution for R_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=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 0.1.1},
    url = {https://CRAN.R-project.org/package=shard},
  }