Dirce Uesu Louis Bavoil Shachar Fleishman Jason Shepherd Cláudio T. Silva Simplification of Unstructured Tetrahedral Meshes by Point Sampling. 157-165 2005 conf/vg/2005 Volume Graphics http://www.eg.org/EG/DL/WS/VG/VG05/157-165.pdf db/conf/vg/vg2005.html#UesuBFSS05