1. Style, mathematics and NC;Bézier;Comput. Aid. Des.,1990
2. Geometric Modeling;Mortenson,1985
3. Multivariable curve interpolation;Ferguson;J. ACM,1964
4. Example of an existing system in the motor industry: The unisurf system;Bézier,1971
5. B-spline curves and surfaces;Gordon,1974