To cite fanplot in publications use:

Abel, Guy J. (2015). fanplot: An R Package for Visualising Sequential Distributions The R Journal, 7(1), 15-23. URL http://journal.r-project.org/archive/2015-1/abel.pdf.

Corresponding BibTeX entry:

  @Article{,
    title = {{fanplot}: An R Package for Visualising Sequential
      Distributions},
    author = {Guy J. Abel},
    journal = {The R Journal},
    year = {2015},
    volume = {7},
    number = {2},
    pages = {15--23},
    url = {http://journal.r-project.org/archive/2015-1/abel.pdf},
  }