To cite package ‘ClusterGVis’ in publications use:

  Kumar, L., & E Futschik, M. (2007). Mfuzz: a software package for
  soft clustering of microarray data. Bioinformation, 2(1), 5–7.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{Mfuzz: a software package for soft clustering of microarray data}},
    author = {Kumar Lokesh and E Futschik Matthias},
    journal = {Bioinformation},
    year = {2007},
    volume = {2},
    doi = {10.6026/97320630002005},
  }