.
OPENNPAR: A System for Developing, Programming, and Designing Non-Photorealistic Animation and Rendering
Nick Halper, Tobias Isenberg, Felix Ritter, Bert Freudenberg, Oscar E. Meruvia Pastor, Stefan Schlechtweg, Thomas Strothotte.
11th Pacific Conference on Computer Graphics and Applications (PG'03), pp. 424, Canmore, Canada,
2003. [BibTeX]
Real-Time Illustration of Vascular Structures
Felix Ritter, Christian Hansen, Volker Dicken, Olaf Konrad-Verse, Bernhard Preim, Heinz-Otto Peitgen.
IEEE Transactions on Visualization and Computer Graphics, Vol. 12, No. 5, pp. 877--884,
2006. [BibTeX]
Using a 3D Puzzle as a Metaphor for Learning Spatial Relations
Felix Ritter, Bernhard Preim, Oliver Deussen, Thomas Strothotte.
Graphics Interface (GI'00), Montreal, 15-17 May,
2000. [BibTeX]