Citation for the BiplotGUI package:

la Grange A, le Roux N, Gardner-Lubbe S (2009). “BiplotGUI: Interactive Biplots in R.” Journal of Statistical Software, 30(12), 1-37. http://www.jstatsoft.org/v30/i12.

Corresponding BibTeX entry:

  @Article{,
    title = {BiplotGUI: Interactive Biplots in R},
    journal = {Journal of Statistical Software},
    volume = {30},
    number = {12},
    pages = {1-37},
    year = {2009},
    author = {AM {la Grange} and NJ {le Roux} and S Gardner-Lubbe},
    url = {http://www.jstatsoft.org/v30/i12},
  }