1. Curves and Surfaces for Computer Aided Geometric Design;Farin,1990
2. Cones on Bézier Curves and Surfaces;Kim,1990
3. Tangent, Normal, and Visibility Cones for Bézier Surfaces;Kim;Computer Aided Geometric Design,1995
4. Loop detection in surface patch intersections;Sederberg;Computer Aided Geometric Design,1988
5. Curves and Surfaces in Computer Aided Geometric Design;Yamaguchi,1988