Yun Jang Manfred Weiler Matthias Hopf Jingshu Huang David S. Ebert Kelly P. Gaither Thomas Ertl Interactively Visualizing Procedurally Encoded Scalar Fields. 35-44, 339 2004 conf/vissym/2004 VisSym db/conf/vissym/vissym2004.html#JangWHHEGE04