1. B-form Basics;de Boor;MRC Technical Summary Report No. 2957,1986
2. Convexity of multivariate Bernstein polynomials and box spline surfaces;Dahmen,1985
3. Subsplines über Dreiecken;Farin;Dissertation,1979
4. Triangular Bernstein-Bézier patches;Farin;J. CAGD,1986
5. Inequalities;Hardy,1952