The following publications are possibly variants of this publication:
- The University of Sheffield s TREC 2006 Q&A ExperimentsMark A. Greenwood, Mark Stevenson, Robert J. Gaizauskas. trec 2006: [doi]
- The University of Sheffield s TREC 2003 Q&A ExperimentsRobert J. Gaizauskas, Mark A. Greenwood, Mark Hepple, Ian Roberts, Horacio Saggion, Matthew Sargaison. trec 2003: 782-790 [doi]
- The University of Sheffield s TREC 2004 QA ExperimentsRobert J. Gaizauskas, Mark A. Greenwood, Mark Hepple, Ian Roberts, Horacio Saggion. trec 2004: [doi]
- The University of Sheffield TREC 2002 Q&A SystemMark A. Greenwood, Ian Roberts, Robert J. Gaizauskas. trec 2002: [doi]
- University of Sheffield TREC-8 Q&A SystemKevin Humphreys, Robert J. Gaizauskas, Mark Hepple, Mark Sanderson. trec 1999: [doi]
- University of Sheffield TREC-9 Q&A SystemSam Scott, Robert J. Gaizauskas. trec 2000: [doi]