@article{freifeld:tpami:2016,
  title = {Transformations Based on Continuous Piecewise-Affine Velocity Fields},
  author = {Oren Freifeld and S{\o}ren Hauberg and Kayhan Batmanghelich and John W. Fisher III},
  journal = {IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI)},
  year = {2016},
}