@TechReport{Thomas09,
  author = 	 {Paul Thomas},
  title = 	 {Quality of language models for distributed
                  information retrieval},
  institution =  {CSIRO ICT Centre},
  year = 	 2009,
  number = 	 {08119},
  month = 	 {March},
  note = 	 {\url{http://es.csiro.au/pubs/thomas_tr09.pdf}}
}