@article{ Reitsma:2003:PMF,
  author = "Paul S. A. Reitsma and Nancy S. Pollard",
  title = "Perceptual Metrics for Character Animation: Sensitivity to Errors in Ballistic Motion",
  year = "2003",
  month = jul,
  journal = "ACM Transactions on Graphics (SIGGRAPH 2003)",
  volume = "22",
  number = "3",
  pages = "537--542",
}