@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{https://david-hawking.net/pubs/hawking_sigir05.pdf}} }