2J.A. Gregory, R. Delbourgo.Pieeewise rational quadratm interpolation to monotonic data, IMA[J]. Numer. Anal., 1982, 2:123-130.
3R. Delbourgo.Shape preserving interpolation to convex data by rational functions with quadratic numerator and linear denominator. IMA[J]. Numer. Anal., 1989, 9: 123-136.
4Q. Duan, K. Djidjeli, W.G. Price, E.H. Twizell.A rational cubic spline based on function values[M]. Comput. And Graphics, 1998, 22(4): 479-486.
5Q. Duan, L. Wang, E.H. Twizell.A ational interpolation based on function values and constrained control of the interpolant curves[M].Applied Mathematics and Computation, 2005, 1:311-322.
6M.Z. Hussain, M. Hussain.Visualization of data subject to positive constraints [M]. Information and Computing Science, 2006, 1(3): 149-160.
2Farin G. Curves and surfaces for computer aided geometric design: a practical guide [M]. Academic Press, 1988.28-54.
3Foley T A. Local control of interval tension using weighted splines [J]. Computer Aided Geometric Design, 1986, 3(2): 281-294.
4Bezier P E. The mathematical basis of the UNISURF CAD system [R]. Butterworth, London, 1986.
5Dierck P, Tytgat B. Generating the Bezier points of β-spline curve [J]. Computer Aided Geometric Design, 1989, 6(2): 279-291.
6Piegl L. On NURBS: a survey [J]. IEEE Computer Graphics and Application, 1991, 11(1): 55-71.
7Nielson G M. CAGD's top ten: what to watch [J]. IEEE Computer Graphics and Automation, 1993, 13(1): 35-37.
8Kouichi Konno, Hiroaki Chiyokura. An approach of designing and controlling free-form surfaces by using NURBS boundary Gregory patches [J]. Computer Aided Geometric Design, 1996, 13(4): 825-849.
9Laurie M Wilcox. First and second contributions to surface interpolation [J]. Vision Research, 1999, 39: 2335-2347.
10Lin R S. Real-time surface interpolator for 3-D parametric surface machining on 3-axis machine tools [J]. Machine Tools and Manufacture, 2000, 40: 1513-1526.