@INPROCEEDINGS{HawkingCT98V,
    BOOKTITLE	= {Proceedings of {TREC}-7},
    MONTH 	= {November},
    YEAR 	= {1998},
    AUTHOR =	 {David Hawking and Nick Craswell and Paul
                  Thistlewaite},
    TITLE =	 {Overview of {TREC-7 Very Large Collection Track}},
    pages =	 {91--104},
    NOTE	=  {NIST special publication 500-242,
              \url{http://david-hawking.net/pubs/hawking_trec98vlc.pdf}
              and  \url{trec.nist.gov/pubs/trec7/t7_proceedings.html}
             },
}