To cite the 'CoClust' package in publications use:

Di Lascio F.M.L. and Giannerini S. (2012) CoClust: copula based cluster analysis. R package version 0.2-2, <http://CRAN.R-project.org/package=CoClust>.
Di Lascio F.M.L. and Giannerini S. (2012) A Copula-Based Algorithm for Discovering Patterns of Dependent Observations, Journal of Classification, Volume 29, Number 1, 50-75.

Corresponding BibTeX entries:

  @Manual{CoClust-package,
    title = {CoClust: copula based cluster analysis},
    author = {F. Marta L. {Di Lascio} and Simone Giannerini},
    year = {2012},
    note = {R package version 0.2-2},
    url = {http://CRAN.R-project.org/package=CoClust},
  }
  @Article{CoClust-article,
    author = {F. Marta L. {Di Lascio} and Simone Giannerini},
    affiliation = {Dipartimento di Scienze Statistiche, Universita' di
      Bologna, via Belle Arti 41, 40126 Bologna, Italy},
    title = {A Copula-Based Algorithm for Discovering Patterns of
      Dependent Observations},
    journal = {Journal of Classification},
    publisher = {Springer New York},
    issn = {0176-4268},
    keyword = {Mathematics and Statistics},
    pages = {50-75},
    volume = {29},
    issue = {1},
    url = {http://dx.doi.org/10.1007/s00357-012-9099-y},
    note = {10.1007/s00357-012-9099-y},
    year = {2012},
  }