To cite MixSim in publications use:

Melnykov V, Chen W, Maitra R (2012). “MixSim: An R Package for Simulating Data to Study Performance of Clustering Algorithms.” Journal of Statistical Software, 51(12), 1–25. https://doi.org/10.18637/jss.v051.i12.

Corresponding BibTeX entry:

  @Article{,
    title = {{MixSim}: An {R} Package for Simulating Data to Study
      Performance of Clustering Algorithms},
    author = {Volodymyr Melnykov and Wei-Chen Chen and Ranjan Maitra},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {51},
    number = {12},
    pages = {1--25},
    url = {https://doi.org/10.18637/jss.v051.i12},
  }