To cite package ‘scmSpillover’ in publications use:

  Cao J (2026). _scmSpillover: Synthetic Control Method with Spillover
  Effects_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=scmSpillover>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {scmSpillover: Synthetic Control Method with Spillover Effects},
    author = {Jianfei Cao},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=scmSpillover},
  }