E. Reinhard, C. Hansen, and S. Parker. EGPGV, volume 29 of ACM International Conference Proceeding Series, page 77-82. Eurographics Association, (2002)
A. Kawaguchi, A. Nagel, C. Chan, and N. Parker. WEBIST (Selected Papers), volume 75 of Lecture Notes in Business Information Processing, page 188-201. Springer, (2010)