http://doi.acm.org/10.1145/248603.248617 db/journals/sigmod/DoanPSB97.html Khoa Doan Catherine Plaisant Ben Shneiderman Tom Bruns Query Previews for Networked Information Systems: A Case Study with NASA Environmental Data. 75-81 sigmodR/26-1/P075.pdf 1997 26 SIGMOD Record 1 db/journals/sigmod/sigmod26.html#DoanPSB97 http://www.acm.org/sigmod/record/issues/9703/doan.ps