To cite forecast.vocs in publications use:

  Sam Abbott (2021). forecast.vocs: Forecast case and sequence
  notifications using variant of concern strain dynamics, DOI:
  10.5281/zenodo.5559016

A BibTeX entry for LaTeX users is

  @Article{,
    title = {forecast.vocs: Forecast case and sequence notifications using variant of concern strain dynamics},
    author = {Sam Abbott},
    journal = {Zenodo},
    year = {2021},
    doi = {10.5281/zenodo.5559016},
  }