1. Coons, S. A. ‘Surfaces for computer-aided design of space forms’, MIT project MAC, MAC-TR-41
2. A treatise on the differential geometry of curves and surfaces;Eisenhart,1909
3. Curves and surfaces for computer aided design;Forrest;Ph.D. Thesis,1968
4. Practical analytical with applications to aircraft;Liming,1944
5. An existing system in the aircraft industry. The British Aircraft Corporation Numerical Master Geometry System;Sabin,1971