Wand, Michael Computer Graphics, MPI for Informatics, Max Planck Society;
Seidel, Hans-Peter Computer Graphics, MPI for Informatics, Max Planck Society;
http://nbn-resolving.de/urn:nbn:de:bsz:21-opus-33880 (Any fulltext)
Bokeloh, M., Berner, A., Wand, M., Seidel, H.-P., & Schilling, A.(2008). Slippage Features (WSI-2008-03). Tübingen: Wilhelm-Schickard-Institut / Universität Tübingen.