S. Johnson, P. Woodland, K. Jones, and P. Jourlin. TREC, volume 500-246 of NIST Special Publication, National Institute of Standards and Technology (NIST), (1999)
S. Johnson, P. Jourlin, K. Jones, and P. Woodland. TREC, volume 500-249 of NIST Special Publication, National Institute of Standards and Technology (NIST), (2000)