Mary Czerwinski Susan T. Dumais George G. Robertson Susan Dziadosz Scott Lee Tiernan Maarten van Dantzich Visualizing Implicit Queries for Information Management and Retrieval. 560-567 1999 CHI http://doi.acm.org/10.1145/302979.303158 db/conf/chi/chi99.html#CzerwinskiDRDTD99