1. Barnhill, R. E., Kersey, S. N.: A marching method for parametric surface/surface intersection. CAGD 7, 257–280 (1990).
2. Casale, M. S.: Freeform solid modeling with trimmed patches. IEEE Comput. Graphics Appl., 33-43 (1987).
3. Casale, M. S., Bobrow, J.: A set operation algorithm for sculptured solid models with trimmed patches. CAGD 6, 235–248 (1989).
4. Casale, M. S., Bobrow, J. E., Underwood, R.: Trimmed-patch boundary elements: bridging the gap between solid modeling and engineering analysis. CAD 24, 193–199 (1992).
5. Farin, G.: Curves and surfaces for computer aided geometric design, 2nd edn. New York: Academic Press 1990.