@Article{SCI:Ste2008a,
  author =    "M. Steffen and S. Curtis and R.M. Kirby and J.K.
              Ryan",
  title =     "Investigation of Smoothness-Increasing
              Accuracy-Conserving Filters for Improving
              Streamline Integration Through Discontinuous
              Fields",
  journal =   "{IEEE} Transactions on Visualization and Computer
              Graphics",
  volume =    "14",
  number =    "3",
  pages =     "680--692",
  year =      "2008",
  url =       "http://www.sci.utah.edu/publications/steffen08/steffen_08_TVCG_streamlines.pdf",
}