To cite package caliver in publications use:

Vitolo C, Giuseppe FD, D’Andrea M (2018). “caliver: an R Package for Calibration and Verification of Forest Fire Gridded Model Outputs.” PLOS ONE, 13(1), 1–18. https://doi.org/10.1371/journal.pone.0189419.

Corresponding BibTeX entry:

  @Article{,
    author = {Claudia Vitolo and Francesca Di Giuseppe and Mirko
      D’Andrea},
    title = {caliver: an {R} Package for Calibration and Verification
      of Forest Fire Gridded Model Outputs},
    journal = {PLOS ONE},
    year = {2018},
    volume = {13},
    number = {1},
    pages = {1--18},
    month = {January},
    url = {https://doi.org/10.1371/journal.pone.0189419},
  }