@inproceedings{Bethel:ShapeMorphing:1989,
  author = {E. Wes Bethel and Samuel P. Uselton},
  title = {{Shape Distortion in Computer-Assisted Keyframe
                  Animation}},
  booktitle = {State-of-the-art in Computer Animation},
  editor = {Nadia Magnenat-Thalmann and Daniel Thalmann},
  year = {1989},
  month = jun,
  publisher = {Spring-Verlag},
  address = {Geneva, Switzerland},
  pages = {215-224},
}