To cite package archetypes in publications use:

Manuel J. A. Eugster and Friedrich Leisch. From Spider-Man to Hero -- Archetypal Analysis in R. Journal of Statistical Software, 30(8), 1-23, 2009. http://www.jstatsoft.org/v30/i08/

To cite weighted and robust archetypes in publications use:

Manuel J. A. Eugster and Friedrich Leisch. Weighted and Robust Archetypal Analysis Computational Statistics and Data Analysis, 55(3):1215-1225, 2011. http://www.sciencedirect.com/science/article/pii/S0167947310004056

To cite the simplex visualization in publications use:

Sohan Seth and Manuel J. A. Eugster. Probabilistic Archetypal Analysis arXiv.org, 2014. http://arxiv.org/abs/1312.7604

Corresponding BibTeX entries:

  @Article{,
    title = {{From {S}pider-{M}an to {H}ero -- Archetypal Analsis in
      {R}},
    author = {Manuel J. A. Eugster and Friedrich Leisch},
    journal = {Journal of Statistical Software},
    year = {2009},
    volume = {30},
    number = {8},
    pages = {1--23},
    url = {http://www.jstatsoft.org/v30/i08/},
  }
  @Article{,
    title = {Weighted and Robust Archetypal Analysis},
    author = {Manuel J. A. Eugster and Friedrich Leisch},
    journal = {Computational Statistics and Data Analysis},
    year = {2011},
    volume = {55},
    number = {3},
    pages = {1215--1225},
    url =
      {http://www.sciencedirect.com/science/article/pii/S0167947310004056},
    preprint = {http://epub.ub.uni-muenchen.de/11498/},
  }
  @TechReport{,
    title = {Probabilistic Archetypal Analysis},
    author = {Sohan Seth and Manuel J. A. Eugster},
    institution = {arXiv.org},
    year = {2014},
    url = {http://arxiv.org/abs/1312.7604},
  }