To cite ICS in publications use:

Nordhausen K, Oja H, Tyler DE (2008). “Tools for Exploring Multivariate Data: The Package ICS.” Journal of Statistical Software, 28(6), 1–31. doi:10.18637/jss.v028.i06.

Corresponding BibTeX entry:

  @Article{,
    title = {Tools for Exploring Multivariate Data: The Package {ICS}},
    author = {Klaus Nordhausen and Hannu Oja and David E. Tyler},
    year = {2008},
    journal = {Journal of Statistical Software},
    volume = {28},
    number = {6},
    pages = {1--31},
    doi = {10.18637/jss.v028.i06},
  }