The construction of spline functions possessing certain shapes like monotonicity, convexity or nonnegativity is an important concern in data representation and computer-aided design. The literature on the subject is reviewed with the aim to help in the selection of the method best suited for a given application. © 1991.
Greiner, H. (1991). A survey on univariate data interpolation and approximation by splines of given shape. Mathematical and Computer Modelling, 15(10), 97–106. https://doi.org/10.1016/0895-7177(91)90094-N