To cite in publications use:

Michael Hahsler, Christian Buchta and Kurt Hornik (2014). Infrastructure for seriation. R package version 1.0-13.
Michael Hahsler, Kurt Hornik and Christian Buchta (2008), Getting things in order: An introduction to the R package seriation. Journal of Statistical Software 25/3. URL: http://www.jstatsoft.org/v25/i03/.

Corresponding BibTeX entries:

  @Manual{,
    title = {Infrastructure for seriation},
    author = {Michael Hahsler and Christian Buchta and Kurt Hornik},
    year = {2014},
    note = {R package version 1.0-13.},
    url = {http://CRAN.R-project.org/},
  }
  @Article{,
    title = {Getting things in order: An introduction to the R package
      seriation},
    author = {Michael Hahsler and Kurt Hornik and Christian Buchta},
    year = {2008},
    journal = {Journal of Statistical Software},
    volume = {25},
    number = {3},
    pages = {1--34},
    url = {http://www.jstatsoft.org/v25/i03/},
    month = {March},
    issn = {1548-7660},
  }