To cite clusterSim in publications use:

Liverani S, Hastie D, Azizi L, Papathomas M, Richardson S (2015). “PReMiuM: An R Package for Profile Regression Mixture Models Using Dirichlet Processes.” Journal of Statistical Software, 64(7), 1–30. doi:10.18637/jss.v064.i07.

Corresponding BibTeX entry:

  @Article{,
    title = {{PReMiuM}: An {R} Package for Profile Regression Mixture
      Models Using Dirichlet Processes},
    author = {Silvia Liverani and David I. Hastie and Lamiae Azizi and
      Michail Papathomas and Sylvia Richardson},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {64},
    number = {7},
    pages = {1--30},
    doi = {10.18637/jss.v064.i07},
  }