@Article{SCI:Tri2002a,
  author =    "X. Tricoche and T. Wischgoll and G. Scheuermann
              and H. Hagen",
  title =     "Topology Tracking for the Visualization of
              Time-Dependent Two-Dimensional Flows",
  journal =   "Computer \& Graphics",
  volume =    "26",
  pages =     "249--257",
  year =      "2002",
  url =       "http://www.sci.utah.edu/publications/Tri2002a/tracking.pdf",
}