1. Barry, P. J., Urn Models, Recursive Curve Schemes, and Computer Aided Geometric Design, Ph.D. dissertation, University of Utah, 1987.
2. Barry, P. J., T. D. DeRose, and R. N. Goldman, B-splines, Pólya curves, and duality, preprint.
3. Barry, P. J. and R. N. Goldman, Interpolation and approximation of curves and surfaces using Pólya polynomials, preprint.
4. Inserting new knots into B-spline curves;Boehm;Comput. Aided Design,1980
5. A survey of curve and surface methods in CAGD;Boehm;Comput. Aided Geom. Design,1984