1. P.J. Barry, De Boor-Fix functionals and polar forms, Comp. Aided Geom. Des. 7(1990)425–430.
2. P.J. Barry, N. Dyn, R.N. Goldman and C.A. Micchelli, Identities for piecewise polynomial spaces determined by connection matrices, Aeq. Math. 42(1991)123–136.
3. P.J. Barry and R.N. Goldman, Factored knot insertion, in:Knot Insertion and Deletion Algorithms for B-Spline Curves and Surfaces, ed. T. Lyche and R.N. Goldman (SIAM, Philadelphia, 1993) pp. 65–88.
4. P.J. Barry and R.N. Goldman, Knot insertion algorithms, in:Knot Insertion and Deletion Algorithms for B-Spline Curves and Surfaces, ed. T. Lyche and R.N. Goldman (SIAM, Philadelphia, 1993) pp. 89–133.
5. P.J. Barry and R.-F. Zhu, Another knot insertion algorithm for B-spline curves, Comp. Aided Geom. Des. 9(1992)175–183.