1. Watertight trimmed nurbs;Sederberg;ACM Transactions on Graphics,2008
2. Comparing offset curve approximation methods;Elber;IEEE Computer Graphics and Applications,1997
3. Elber G. Free form surface analysis using a hybrid of symbolic and numerical computation. Ph.D. Thesis, University of Utah; 1992.
4. Sliding windows algorithm for B-spline multiplication;Chen,2007
5. Some identities for products and degree raising of splines;Morken;Constructive Approximation,1991