Issue No.06 - September (1983 vol.3)
S. Dodd , Bell Laboratories
J. Roulier , University of Connecticut
Compared with other methods, this technique for smooth surface interpolation over grid data reduces the number of extraneous local optima and inflection points of the surface.
S. Dodd, J. Roulier, "Shape-Preserving Spline Interpolation for Specifying Bivariate Functions on Grids", IEEE Computer Graphics and Applications, vol.3, no. 6, pp. 70-79, September 1983, doi:10.1109/MCG.1983.263246