To cite package 'teigen' in publications use:

Andrews, J. L. & McNicholas, P. D. (2013). teigen: Model-based clustering and classification with the multivariate t-distribution. R package version 2.
Andrews, J. L. & McNicholas, P. D. (2012). Model-based clustering, classification, and discriminant analysis via mixtures of multivariate t-distributions. Statistics and Computing, 22(5), 1021-1029.

For BibTeX entries, call: toBibtex(citation('teigen'))

Corresponding BibTeX entries:

  @Manual{,
    title = {teigen v2: Model-based clustering and classification with
      the multivariate t-distribution},
    author = {Jeffrey L. Andrews and Paul D. McNicholas},
    year = {2013},
    note = {R package version 2},
  }
  @Article{,
    title = {Model-based clustering, classification, and discriminant
      analysis via mixtures of multivariate t-distributions},
    author = {Jeffrey L. Andrews and Paul D. McNicholas},
    journal = {Statistics and Computing},
    volume = {22},
    number = {5},
    pages = {1021--1029},
    year = {2012},
  }