David A. Evans Jeffrey Bennett Xiang Tong Alison Huettner ChengXiang Zhai Emilia Stoica CLARIT TREC-8 Manual Ad-Hoc Experiments. 1999 TREC http://trec.nist.gov/pubs/trec8/papers/CLARIT_ManualAdHoc.pdf db/conf/trec/trec1999.html#EvansBTHZS99