BURGER, J. Issues, Tasks and Program Structures to Roadmap Research in Question & Answering (Q&A) NIST DUC Vision and Roadmap Documents. http://www-nlpir.nist.gov/projects/duc/roadmapping.html. 2001
VOORHEES, E. M. eds. Proceedings of the Eighth Text REtrieval Conference (TREC-8), 2000. 2000