@InProceedings{BBU06:ISVC,
author    = {Tom Bobach and Martin Bertram and Georg Umlauf},
title     = {Issues and implementation of {$C^1$} and {$C^2$} natural neighbor interpolation},
booktitle = {Advances in Visual Computing. Part II},
year      = 2006,
editor    = {G.~Bebis et al.},
pages     = {186-195}
}