To cite package ‘coresynth’ in publications use:

  Yosuke Abe (2026). _coresynth: Fast and Unified Synthetic Control
  Methods_. R package version 0.2.1,
  <https://github.com/yo5uke/coresynth>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {coresynth: Fast and Unified Synthetic Control Methods},
    author = {{Yosuke Abe}},
    year = {2026},
    note = {R package version 0.2.1},
    url = {https://github.com/yo5uke/coresynth},
  }