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2. cad modelling of sculptured workpieces from physical models;Ma,1993
3. Smooth surface approximation and reverse engineering;Sarkar;Comput.-Aided Des.,1991
4. From conies to nurbs;Farin;IEEE Comput. Graph. & Applic.,1992
5. On nurbs: a survey;Piegl;IEEE Comput. Graph. & Applic.,1991