@InCollection{topoinvis05_klein,
  author = {Klein, T. and Ertl, T.},
  title  = {{Scale-Space Tracking of Critical Points in 3D Vector Fields}},
  year   = {2007},
  pages  = { 35--49},
  booktitle = {{Mathematics and Visualization, Topology-Based Methods in Visualization (Proceedings of TopoInVis '05)}},
  publisher =    {Springer},
  address =   {Berlin Heidelberg},
  editor =    {Helwig Hauser and Hans Hagen and Holger Theisel}
}