@article{HeZhRu18,
  author = {Heeren, Behrend and Zhang, Chao and Rumpf, Martin and Smith, William},
  title = {Principal Geodesic Analysis in the Space of Discrete Shells},
  journal = {Comput. Graph. Forum},
  year = {2018},
  volume = {37},
  number = {5},
  pages = {173--184},
  doi = {10.1111/cgf.13500},
  fjournal = {Computer Graphics Forum},
}