Kindly cite the helsinki R package as follows:

  Juuso Parkkinen, Joona Lehtomaki, Pyry Kantanen, and Leo Lahti
  (2022). helsinki R package. R package version 1.0.6 URL:
  https://github.com/rOpenGov/helsinki

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {helsinki R package},
    author = {Juuso Parkkinen and Joona Lehtomaki and Pyry Kantanen and Leo Lahti},
    url = {https://github.com/rOpenGov/helsinki},
    year = {2022},
    note = {R package version 1.0.6},
  }

Many thanks for all contributors! For more info, see:
https://github.com/rOpenGov/helsinki