1. J H Ahlberg, E N Nilson, J L Walsh. The Theory of Splines and Their Applications, Academic Press, New York, 1967.
2. Cde Boor. A Practical Guide to Splines, Springer Verlag, New York, 1978.
3. K Brodlie. A review of methods for curve and function drawing, In: Mathematical Methods in Computer Graphics and Design, 1980.
4. G Farin. Curves and Surfaces for Computer Aided Geometric Design: A Practical Guide, Academic Press, New York, 1989.
5. I D Faux, M J Pratt. Computational Geometry for Design and Manufacture, Ellis Horwood, New York, 1979.