1. Recursively generated B-spline surfaces on arbitrary topological meshes;Catmull;Computer-Aided Design,1978
2. Filling polygonal holes with rectangular patches;Hahn,1989
3. G-Splines höherer Ordnung;Mögerle,1992
4. Ck-analysis of subdivision surfaces at extraordinary points;Prautzsch,1995
5. TURBS—topologically unrestricted rational B-splines;Reif,1995