@InProceedings{	  Gerstner:1999,
  author	= {Gerstner, T.},
  title		= {{A}daptive {H}ierarchical {M}ethods for {L}andscape
		  {R}epresentation and {A}nalysis},
  editor	= {Hergarten, S. and Neugebauer, H.-J.},
  booktitle	= {Process Modelling and Landform Evolution},
  series	= {Lecture Notes in Earth Sciences 78},
  publisher	= {Springer},
  pages		= {75--92},
  ps		= {http://wissrech.ins.uni-bonn.de/research/pub/gerstner/process.ps.gz}
		  ,
  abstract	= { Hierarchical interpolation techniques allow the efficient
		  representation of digital terrain data. Due to the inherent
		  adaptivity of these methods, less points are needed for the
		  storage of smooth areas compared to non--adaptive methods.
		  They also allow the derivation of approximate terrain
		  models with variable level of detail. This results in a
		  significant compression of the data as well as a highly
		  reduced computational cost of algorithms for terrain
		  analysis. },
  year		= {1999},
  annote	= {350}
}