@InProceedings{SCI:Tri2001d,
  author =    "X. Tricoche and G. Scheuermann and H. Hagen",
  title =     "Continuous Topology Simplification of Planar
              Vector Fields",
  booktitle = "Proceedings of {IEEE} Visualization 2001",
  pages =     "159--166",
  year =      "2001",
  url =       "http://www.sci.utah.edu/publications/tricoche01/continuous.pdf",
}