@misc{842226,
  author = {William Hersh and Paul Over},
  title = {The TREC-9 Interactive Track Report},
  year = {2001},
  month = {2001-11-19 00:11:00},
  publisher = {The TREC-9 Interactive Track Report},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=151513},
  language = {en},
}