- TREC. 2001.
- TREC. 2001.
- TREC. 2001.
- TREC. 2001.
- TREC. 2001.
- TREC. 2001.
- Ellen M. Voorhees, Donna K. Harman, editors, Proceedings of The Tenth Text REtrieval Conference, TREC 2001, Gaithersburg, Maryland, USA, November 13-16, 2001. Volume Special Publication 500-250 of National Institute of Standards and Technology (NIST), 2001.