@article{34286,
  author = {Ellen Voorhees},
  title = {Natural Language Processing and Information Retrieval},
  year = {1999},
  month = {1999-07-13},
  publisher = {Summer School on Information Extraction},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=151418},
  language = {en},
}