@Book{numnotes09-schafhitzel,
  author = {Baysal, K. and Schafhitzel, T. and Ertl, T. and Rist, U.},
  title  = {{Extraction and Visualization of Flow Features}},
  year   = {2009},
  pages  = {305-314},
  series = {{Notes on Numerical Fluid Mechanics and Multidisciplinary Design}},
  publisher = {{Springer Verlag}}
}