@article{HawkingTH99,
  author = {David Hawking and Paul Thistlewaite and Donna Harman},
  title = {Scaling Up the {TREC} Collection},
  journal = {Information Retrieval},
  year = {1999},
  volume = {1},
  number = {1},
  pages = {115-137},
  note = {\url{http://dx.doi.org/10.1023/A:1009938405269}}
}