@article{11005,
  author = {Erlend Arge and Morten D{\ae}hlen and Aslak Tveito},
  title = {Approximation of Scattered Data Using Smooth Grid Functions},
  year = {1995},
  journal = {J. Comput. Appl. Math.},
  volume = {59},
  pages = {191-205,},
}