Hongtao Xu Timothy S. Newman An Analysis of Errors in Feature-Preserving Mesh Simplification Based on Edge Contraction. 671-678 2006 conf/3dpvt/2006 3DPVT http://doi.ieeecomputersociety.org/10.1109/3DPVT.2006.24 db/conf/3dpvt/3dpvt2006.html#XuN06