8L De Floriani, P Magillo, E Puppo. Variable Resolution Operators on a Multiresolution Terrain Model [A].In: Proc 4th ACM Workshop on Advances in Geographic Information Systems [C], 1996: 121-128.
9M H Gross, R Gatti, O Staadt. Fast Multiresolution Surface Meshing [J]. IEEE Visualization'95 Proceedings, 1995: 135-142.
10B Hamann. A Data Reduction Scheme for Triangulated Surfaces [J]. Computer Aided Geometric Design,1994(11):197-214.
