1. ‘Mathematical and practical possibilities of UNISURF’;Bezier,1974
2. ‘Recursively generated B-spline surfaces on arbitrary topological meshes’;Catmull;Comput Aided Des,1978
3. ‘Behaviour of recursive division surfaces near extraordinary points’;Doo;Comput Aided Des,1978
4. ‘B-spline curves and surfaces’;Gordon,1974
5. ‘A C1 Triangular interpolation patch for Computer-Aided Geometric Design’;Gregory;Computer Graphics and Image Processing,1980