1. Curves and surfaces for computer aided design, a practical guide;Farin,1993
2. Fundamentals of computer aided geometric design;Hoschek,1993
3. The NURBS book;Piegl,1997
4. Geometric spline curves;Hagen;Comput Aided Des,1985
5. Intrinsic parametrization for approximation;Hochek;Comput Aided Geometric Des,1988