Yoav Benjamini.
Opening the Box of a Boxplot.
In The American Statistician, vol. 42, no. 4, pp. 257--262, 1988.

Bibtex:

@Article{        benjamini:1988:OBBP,
  author = 	 "Yoav Benjamini",
  title = 	 "Opening the Box of a Boxplot",
  journal = 	 "The American Statistician",
  year = 	 "1988",
  volume = 	 "42",
  number = 	 "4",
  pages = 	 "257--262",
  month = 	 "November",
}