J. Gregory Trafton Sandra P. Marshall Farilee Mintz Susan Bell Trickett Extracting Explicit and Implict Information from Complex Visualizations. 206-220 2002 conf/diagrams/2002 Diagrams http://link.springer.de/link/service/series/0558/bibs/2317/23170206.htm db/conf/diagrams/diagrams2002.html#TraftonMMT02