Combining Evidence for Information Retrieval. - Nicholas J. Belkin; Paul B. Kantor; Colleen Cool; Richard Quatrain (TREC, 1993)

New Tools and Old Habits: The Interactive Searching Behavior of Expert Online Searches using INQUERY. - Jürgen Koenemann; Richard Quatrain; Colleen Cool; Nicholas J. Belkin (TREC, 1994)