Tom Lyche, Knut Mørken. Chapter 6: How Much Can the Size of the B-Spline Coefficients Be Reduced by Inserting One Knot?. In Ronald N. Goldman, Tom Lyche, editors, Knot Insertion and Deletion Algorithms for B-Spline Curves and Surfaces. pages 155-178, SIAM, 1992. [doi]
Abstract is missing.