1. Barsky BA. The Beta-spline: A local representation based on shape parameters and fundamental geometric measure. Ph.D. Thesis, University of Utah, 1981.
2. Bartels R, Beatty J. Beta-splines with a difference. Technical Report cs-83-40, Computer Science Department, University of Waterloo, Waterloo, Canada, 1984.
3. Curvature continuous curves and surfaces;Boehm;Computer Aided Geometric Design,1985
4. Curve fitting in one and two dimensions using splines under tension, Comm;Cline;Acal,1976
5. Generating the Bézier points of β-spline curve;Dierckx;Computer Aided Geometric Design,1989