To cite package ‘excessmort’ in publications use:

  Irizarry RA, Acosta R (2025). _excessmort: Excess Mortality_. R
  package version 0.7.0, <https://github.com/rafalab/excessmort>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {excessmort: Excess Mortality},
    author = {Rafael A. Irizarry and Rolando Acosta},
    year = {2025},
    note = {R package version 0.7.0},
    url = {https://github.com/rafalab/excessmort},
  }