@Article{Klimke:2005:ASP,
  author =       "Andreas Klimke and Barbara Wohlmuth",
  title =        "Algorithm 847: {spinterp}: Piecewise Multilinear Hierarchical Sparse 
                 Grid Interpolation in {MATLAB}",
  journal =      "{ACM} Transactions on Mathematical Software",
  volume =       "31",
  number =       "4",
  month =        dec,
  year =         "2005",
  pages =        "561--579",
  URL =          "http://doi.acm.org/10.1145/1114268.1114275", 
  abstract =     "To recover or approximate smooth multivariate functions, sparse grids are 
                 superior to full grids due to a significant reduction of the required 
                 support nodes. The order of the convergence rate in the maximum norm is 
                 preserved up to a logarithmic factor. We describe three possible piecewise 
                 multilinear hierarchical interpolation schemes in detail and conduct a 
                 numerical comparison. Furthermore, we document the features of our sparse 
                 grid interpolation software package spinterp for MATLAB",
}