TY  - GEN
AU  - Voorhees, E M
AU  - Harman, D K
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 2001-01-01 05:01:00
DO  - https://doi.org/10.6028/NIST.SP.500-249
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 2001
TI  - The ninth text REtrieval conference (TREC-9):
ER  -