[Jackson et al., 2003]
Cullen Jackson, Daniel Acevedo, David H. Laidlaw, Fritz Drury, Eileen Vote, and Daniel Keefe. Designer-critiqued Comparison of 2D Vector Visualization Methods: A Pilot Study. In SIGGRAPH 2003 Sketches and Applications. ACM SIGGRAPH, 2003. (pdf) (bibtex: Jackson-2003-DCC).