To cite package ‘ercv’ in publications use:

  del Castillo J, Moriña Soler D, Serra I (2026). _ercv: Fitting Tails
  by the Empirical Residual Coefficient of Variation_. R package
  version 1.0.2, <https://CRAN.R-project.org/package=ercv>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ercv: Fitting Tails by the Empirical Residual Coefficient of Variation},
    author = {Joan {del Castillo} and David {Moriña Soler} and Isabel Serra},
    year = {2026},
    note = {R package version 1.0.2},
    url = {https://CRAN.R-project.org/package=ercv},
  }