@inproceedings{HawkingT05,
  author = {David Hawking and Paul Thomas},
  title = {Server Selection Methods in Hybrid Portal Search},
  booktitle = {Proceedings of ACM SIGIR 2005},
  year = {2005},
  location = {Salvador, Brazil},
  pages = {75--82},
  note = {\url{http://es.csiro.au/pubs/hawking_sigir05.pdf}}
}