@article{escidoc:0649,
  title = {{Crystal field parameters at the (0001) surface of rare-earth metals: an ab initio study}},
  journal = {{Journal of Physics: Condensed Matter}},
  volume = {17},
  pages = {2061--2072},
  year = {2005},
  slug = {escidoc-0649},
  author = {Welsch, F. and F\"ahnle, M. and Jensen, P. J.}
}