To cite package ‘jpops’ in publications use:

Uryu S (2023). jpops: Provides a Data Set on the Population in Japan. R package version 0.0.0.9000, https://github.com/uribo/jpops.

Corresponding BibTeX entry:

  @Manual{,
    title = {jpops: Provides a Data Set on the Population in Japan},
    author = {Shinya Uryu},
    year = {2023},
    note = {R package version 0.0.0.9000},
    url = {https://github.com/uribo/jpops},
  }