@inproceedings{Turk:1999:STU,
  title = {Shape Transformation Using Variational Implicit Functions},
  booktitle = {Proceedings of ACM SIGGRAPH 1999},
  author = {Greg Turk and James F. O'Brien},
  month = aug,
  location = {Los Angeles, California},
  year = 1999,
  pages = {335--342},
  url = {http://graphics.cs.berkeley.edu/papers/Turk-STU-1999-08/},
}