@article{UpstillCH03,
  author = {Trystan Upstill and Nick Craswell and David Hawking},
  title = {Query-independent evidence in home page finding},
  journal = {ACM Transactions on Information Systems (TOIS)},
  volume = {21},
  number = {3},
  year = {2003},
  issn = {1046-8188},
  pages = {286--313},
  doi = {http://doi.acm.org/10.1145/858476.858479},
  publisher = {ACM Press},
  note = {\url{http://es.csiro.au/pubs/upstill_tois03.pdf}}
}