1. B-form basics;de Boor,1987
2. Triangular Bernstein–Bézier patches;Farin;Comput. Aided Geom. Des.,1986
3. Curves and Surfaces for Computer Aided Geometric Design;Farin,1996
4. J. Hoschek, D. Lasser, Fundamentals of Computer Aided Geometric Design, A.K. Peters, Wellesley, MA, 1993.
5. The distance for the Bézier curves and degree reduction;Lee;Bull. Austral. Math. Soc.,1997