3DUTTON G.Encoding and Handling Geospatial Data with Hierarchical Triangular Meshes[C]//Proceeding of 7th International Symposium on Spatial Data Handling.Netherlands:Delft University of Technology,1996.34-43.
4SAHR K,WHITE D,KIMERLING A.Geodesic Discrete Global Grid Systems[J].Cartography & Geographical Information Science,2003,30(2):121-134.
5LEE M,SAMET H.Navigating through Triangle Meshes Implemented as Linear Quadtree[J].ACM Transactions on Graphics,2000,19(2):79-121.