1. General discussion of the use of conic equations to define curved surfaces;Newell,1960
2. Surfaces for computer-aided design of space forms;Coons,1967
3. Curves and surfaces for computer-aided design;Forrest;PhD thesis University of Cambridge, UK,1968
4. The twisted cubic curve;Wood,1913
5. The methods of plane projective geometry based on the use of general homogeneous coordinates;Maxwell,1946