@INPROCEEDINGS{HawkingT95, BOOKTITLE = {Proceedings of {TREC}-4}, MONTH = {November}, YEAR = {1995}, AUTHOR = {David Hawking and Paul Thistlewaite}, TITLE = {Proximity Operators - So Near And Yet So Far}, PAGES = {131--143}, annote = {Source in /home/dave_data/cheques_local/dave/Papers_Old/Published/TREC4}, NOTE = {NIST special publication 500-236. \url{https://david-hawking.net/pubs/HawkingT95.pdf}, and \url{trec.nist.gov/pubs/trec4/t4_proceedings.html}}, }