@inproceedings{HawkingJ12,
  author =       {David Hawking and Timothy Jones},
  title =        {Reordering an index to speed query processing without loss of effectiveness.},
  booktitle = {Proceedings of ADCS 2012},
  year =      2012,
  location =     {Dunedin, NZ},
  pages =     {17--24},
  note =      {\url{http://david-hawking.net/pubs/HawkingJ2012.pdf} and
                   \url{http://dx.doi.org/10.1145/2407085.2407088}}}