@techreport{CraswellHG01,
  author = {Nick Craswell and David Hawking and Kathleen Griffiths},
  title = {Which search engine is best at finding airline site home pages?},
  institution = {CSIRO Mathematical and Information Sciences},
  year = {2001},
  number = {01/45},
  note = {\url{https://david-hawking.net/pubs/craswell_tr01.pdf}}
}