@misc{10078,
  author = {Erlend Arge and Morten D{\ae}hlen and {\O}yvind Hjelle},
  title = {Mathematical Software for Terrain Modelling},
  year = {1997},
  journal = {The 5th Scandinavian Conference on Geographical Information systems},
  pages = {297-309,},
  editor = {J.T. Bj{\o}rke},
}