To cite tbrf in publications use:

Schramm M (2020). tbrf: Time Based Rolling Functions. doi:10.5281/zenodo.3727319. https://CRAN.R-project.org/package=tbrf.

Corresponding BibTeX entry:

  @Manual{,
    title = {{tbrf}: Time Based Rolling Functions},
    author = {Michael Schramm},
    year = {2020},
    url = {https://CRAN.R-project.org/package=tbrf},
    doi = {10.5281/zenodo.3727319},
  }