To cite ICS in publications use:

Klaus Nordhausen, Hannu Oja, David E. Tyler (2008). Tools for Exploring Multivariate Data: The Package ICS. Journal of Statistical Software, 28(6), 1-31. URL http://www.jstatsoft.org/v28/i06/.

Corresponding BibTeX entry:

  @Article{,
    title = {Tools for Exploring Multivariate Data: The Package {ICS}},
    author = {Klaus Nordhausen and Hannu Oja and David E. Tyler},
    journal = {Journal of Statistical Software},
    year = {2008},
    volume = {28},
    number = {6},
    pages = {1--31},
    url = {http://www.jstatsoft.org/v28/i06/},
  }