To cite distrMod in publications use:

Kohl M, Ruckdeschel P (2010). “R Package distrMod: S4 Classes and Methods for Probability Models.” Journal of Statistical Software, 35(10), 1–27. http://www.jstatsoft.org/v35/i10/.

Corresponding BibTeX entry:

  @Article{,
    title = {{R} Package {distrMod}: {S}4 Classes and Methods for
      Probability Models},
    author = {Matthias Kohl and Peter Ruckdeschel},
    journal = {Journal of Statistical Software},
    year = {2010},
    volume = {35},
    number = {10},
    pages = {1--27},
    url = {http://www.jstatsoft.org/v35/i10/},
  }