To cite koRpus in publications use:

michalke, m. (2014). koRpus: An R Package for Text Analysis (Version 0.05-5). Available from http://reaktanz.de/?c=hacking&s=koRpus

Corresponding BibTeX entry:

  @Manual{,
    title = {koRpus: An R Package for Text Analysis},
    author = {m.eik michalke},
    year = {2014},
    note = {(Version 0.05-5)},
    url = {http://reaktanz.de/?c=hacking&s=koRpus},
  }