To cite package ‘pega’ in publications use:

  Ibarra-Espinosa S (2026). _pega: Pollutants Emissions and Gaseous of
  the Atmosphere_. R package version 0.9.8,
  <https://github.com/atmoschem/pega>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pega: Pollutants Emissions and Gaseous of the Atmosphere},
    author = {Sergio Ibarra-Espinosa},
    year = {2026},
    note = {R package version 0.9.8},
    url = {https://github.com/atmoschem/pega},
  }