To cite package ‘ei’ in publications use:

King G, Roberts M (2016). ei: Ecological Inference. R package version 1.3-3, https://CRAN.R-project.org/package=ei.

ATTENTION: This citation information has been auto-generated from the package DESCRIPTION file and may need manual editing, see ‘help("citation")’.

Corresponding BibTeX entry:

  @Manual{,
    title = {ei: Ecological Inference},
    author = {Gary King and Molly Roberts},
    year = {2016},
    note = {R package version 1.3-3},
    url = {https://CRAN.R-project.org/package=ei},
  }