1. CADAMP, Computer aided design and model production;Broek,1984
2. Automatic prototyping of complex geometries for conceptual design;Vergeest,1990
3. Automatic generation and graphical representation of constrained surfaces;Vergeest;Delft Prog. Rep.,1990
4. A Practical Guide to Splines;de Boor,1979
5. Curves and Surfaces for Computer Aided Geometric Design;Farin,1988