[1] James H Clark. Hierarchicalgeometric models for visible surface algorithms[J]. CACM;1986;19(10):547-554.
[2] L Paul Chew. Constrained Delaunay Triangulations[J]. Algorithmica;1989;4:97-108.
[3] Michael Garland;Paul S Heckbert. Fast polygonal approximation of terrains andheight fields[R]. Technical Report CMU-CS-95-181. Comp.Sci.Dept.;Carnegie MellonUniversity;1995.
[4] Pankaj K.Agarwal;Subhash Suri. An efficient algorithm for terrainsimplification[A]. In Proc. ACM-SIAM Symposium Discrete Algorithms[C]. 1997. 139-147.
[5] Cignoni P;Montani C;Scopigno R. A comparison of mesh simplificationalgorithms[J]. Computers &Graphics;1998;22(1):37-54.
[6] Hugues Hoppe. Progressive meshes[A]. In SIGGRAPH'96 Proc.[C]. 1996. 99-108.