TY - JOUR AU - Voorhees, Ellen AU - Harman, Donna C2 - Information Processing and Management DA - 1999-10-25 LA - en PB - Information Processing and Management PY - 1999 TI - Overview of the Sixth Text REtrieval Conference (TREC-6) UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=151399 ER -