More Reading Visual information seeking: Tight coupling of dynamic query filters with starfield displays. Chris Ahlberg and Ben Shneiderman, Proc SIGCHI '94, pages 313-317. http://citeseer.ist.psu.edu/ahlberg94visual.html Toolglass and magic lenses: the see-through interface Eric A. Bier, Maureen C. Stone, Ken Pier, William Buxton, and Tony D. DeRose, Proc. SIGGRAPH'93, pp. 73-76. http://citeseer.nj.nec.com/bier93toolglass.html Brushing Scatterplots, Becker and Cleveland Technometrics, vol 29, pp 127-142, 1987 Reprinted in Dynamic Graphics for Data Analysis, edited by W. S. Cleveland and M. E. McGill, Chapman and Hall, New York, (1988) Visual Exploration of Large Structured Databases, Graham J. Wills, in New Techniques and Trends in Statitics, pp 237-246, IOS Press 1995.