1. An Introduction to Splines for use in Computer Graphics and Geometric Modeling;Bartels,1987
2. Introduction to Higher Algebra;Boˆcher,1907
3. Smooth curves and surfaces;Boehm,1987
4. A survey of curve and surface methods in CAGD;Boehm;Computer Aided Geometric Design,1984
5. A class of local interpolating splines;Catmull,1974