To cite etasFLP in publications use:

Marcello Chiodi, Giada Adelfio (2017). Mixed Non-Parametric and Parametric Estimation Techniques in R Package etasFLP for Earthquakes' Description. Journal of Statistical Software, 76(3), 1-28.<doi:10.18637/jss.v076.i03>

Corresponding BibTeX entry:

  @Article{,
    title = {Mixed Non-Parametric and Parametric Estimation Techniques
      in {R} Package {etasFLP} for Earthquakes' Description},
    author = {Marcello Chiodi and Giada Adelfio},
    journal = {Journal of Statistical Software},
    year = {2017},
    volume = {76},
    number = {3},
    pages = {1--28},
    doi = {10.18637/jss.v076.i03},
  }