@article{HildebrandtPolthier2012,
  author = {Klaus Hildebrandt and Konrad Polthier},
  title = {Consistent discretizations of the Laplace–Beltrami operator and the Willmore energy of surfaces},
  journal = {Oberwolfach Reports},
  year = {2012},
  volume = {9},
  pages = {2094-2097}
}