Tensor Product Spline Interpolation subject to Piecewise Bilinear Lower and Upper Bounds. - Bernd Mulansky; Jochen W. Schmidt; Marion Walther (Advanced Course on FAIRSHAPE, 1996)

Algorithm for constructing range restricted histosplines. - Jochen W. Schmidt; Marion Bastian-Walther (Numer. Algorithms, 1998)

Nonnegative Volume Matching by Cubic C1 Splines on Clough-Tocher Splits. - Jochen W. Schmidt; Marion Bastian; Bernd Mulansky (SIAM J. Numer. Anal., 2001)