6[8]Joe B,Simpson R B. Triangular meshes for Regions of Complicated Shape[J]. International Journal for Numerical Methods in Engineering, 1986,23 (5): 751~778.
7[9]Floriani L D. An Online Algorithm for Constrained Delaunay Triangulation[J]. CVGIP: Graphical Models and Image Processing, 1992,54(3) :290~300.
8[10]Lawson C L. Software for surface interpolation[J].Mathematical Software Ⅲ, Rice. Ed. NewYork: Academic Press, 1977.