@article{DBLP:journals/sigir/HullR99,
author = {David A. Hull and
Stephen E. Robertson},
title = {The TREC-9 Filtering Track},
journal = {SIGIR Forum},
volume = {33},
number = {2},
year = {1999},
pages = {16},
ee = {http://doi.acm.org/10.1145/344250.344253},
bibsource = {DBLP, http://dblp.uni-trier.de}
}