1. BOEHM W., On Cubics : A Survey. Comput. Graph. Image Process. 19 (1982) pp. 201-226.0534.65095
2. BOEHM W., FARIN G. and KAHMANN J., A survey of curve and surface methods in CAGD. Comput. Aided Geom. Design, 1 (1984) pp. 1-60.0604.65005
3. BOEHM W. and HANSFORD D., Bézier Patches on Quadrics, in G. Farin, editor, NURBS for Curve and Surface Design, SIAM, Philadelphia (1991) pp. 1-14.11334600760.68087
4. FARIN G., Curves and Surfaces for Computer Aided Geometric Design. Academic Press, 1988, 2nd Edition 1990.9741090694.68004
5. FARIN G., PIPER B. and WORSEY A., The octant of a sphere as a non-degenerate triangular Bézier patch. Comput. Aided Geom. Design, 4 (1987) pp. 329-332.9373710646.41011